Assignment

Crime revention Through Environmental Design Guidebook 3

4 Crime revention Through Environmental Design Guidebook

Making Singapore

VISIO VISIO

Safe & Secure for all.

We work in Partner hip

MISSIO MISSIO

with the Community and

the Police to prevent crime.

ational Crime Prevention Council

c/o ublic Affairs Department, olice Headquarters, Level 4, New hoenix ark Tower , 28 Irrawaddy Road, Singapore 329560 Tel: (65) 6252 4101 Fax: (65) 6251 2913 Website: www.ncpc.gov.sg Email: [email protected]

© October 2003

Crime revention Through Environmental Design Guidebook 5

Page

FOREWORD ..................................................................................................................................................................... ii

I TRODUCTIO .............................................................................................................................................................. 1

CRIME PREVE TIO THROUGH E VIRO ME TAL DESIG PRI CIPLES ..................................................................... 3

• Four rinciples of C TED ...................................................................................................................... 3

Natural Surveillance ............................................................................................................................ 4

Natural Access Control ....................................................................................................................... 4

Territorial Reinforcement ..................................................................................................................... 5

Maintenance and Management ...................................................................................................... 5

• “Three D” Approach ........................................................................................................................... 6

Designation ........................................................................................................................................... 6

Definition ............................................................................................................................................... 6

Design ................................................................................................................................................... 7

BASIC DESIG A D MA AGEME T STRATEGIES.......................................................................................................... 8

Sight Lines .............................................................................................................................................. 9

Lighting .................................................................................................................................................. 11

Concealed or Isolated Routes ........................................................................................................... 13

Entrapment Areas ................................................................................................................................ 15

Isolation ................................................................................................................................................. 17

Land Use Mix ........................................................................................................................................ 19

Activity Generators ............................................................................................................................. 21

Ownership, Maintenance and Management ................................................................................. 23

Signs and Information ......................................................................................................................... 25

Overall Design ...................................................................................................................................... 27

APPE DIX A : CHECKLIST .............................................................................................................................................. 29

APPE DIX B : EXAMPLES OF CPTED STRATEGIES APPLICABLE TO VARIOUS DEVELOPME TS ................................... 34

Condominiums and ublic Housing .................................................................................................. 34

Landed Developments ....................................................................................................................... 36

Central Business District/ Regional Centres/ Town Centres ............................................................ 39

Offices/ Retails/ Hotels ........................................................................................................................ 40

Educational Institutions and Schools ................................................................................................. 42

Industrial Areas ..................................................................................................................................... 44

APPE DIX C: EXAMPLES OF CPTED STRATEGIES APPLICABLE TO PUBLIC SPACES ..................................................... 47

Car arks ............................................................................................................................................... 47

arks/ Open Spaces/ laygrounds .................................................................................................... 50

Back Lanes ........................................................................................................................................... 54

ublic Washrooms ................................................................................................................................ 55

Sidewalks/ Walkways ........................................................................................................................... 56

Underpasses/ edestrian Overhead Bridges .................................................................................... 57

Bus Shelters/ Taxi Stands/ MRT/ LRT Stations ...................................................................................... 59

REFERE CES..................................................................................................................................................................... 61

CREDITS ........................................................................................................................................................................... 62

CO TE TSCO TE TS

Crime revention Through Environmental Design Guidebook i

6 Crime revention Through Environmental Design Guidebook

FOREWORDFOREWORD

Since its inception in 1981, the National Crime revention Council (NC C) of Singapore had been actively working towards the objectives, such as, to raise the level of public awareness

about crime; to encourage self-help in crime prevention; to examine, develop and recommend

crime prevention measures to the public and to coordinate efforts of various organisations in

crime prevention.

The NC C engages the public through the organisation of crime prevention activities such as

crime prevention campaigns, exhibitions, seminars and workshops. The NC C also forges close

alliances with various professional, social and trade organisations to tackle the problem of

crime. In addition, various sub-committees have been formed to address problems of security

in specific areas. They are the Hotel Security Committee, Security in Construction Worksites

Committee, Children and Youth Committee, Security in Housing Committee, Security in

Commercial remises Committee and Focus Group Committee.

Working in partnership with the stakeholders in the construction and real estate industry to

design out crime is the latest effort by the NC C in its strive towards making Singapore a safe

place. This is achieved through the use of Crime revention Through Environmental Design

(C TED) principles when designing buildings, facilities and the surrounding. In view of the

emerging trend of extreme crimes, such as terrorism, in the region as well as globally, the

adoption of C TED principles can also be adapted and applied to counter these threats. This

C TED Guidebook will serve as a useful reference for planners, building professionals, security

agencies and homeowners to incorporate suitable crime prevention and security measures in

their planning and design of their building and infrastructure projects.

Mr Tan Kian Hoon

Chairma

Natio al Crime Preve tio Cou cil

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Crime revention Through Environmental Design Guidebook 7

I TRODUCTIO

Crime is a social problem in our society that affects thousands of people’s lives each year. Serious crimes against persons and properties generate considerable fear within

the community. Crimes like theft, break-in, rape and murder are serious threats to the

safety of the community. The resulting fear of crime in itself can restrict people’s freedom

of movement and prevent them from fully participating in the community. In particular,

some groups of people are more vulnerable to crime and the fear of crime, for example,

older people, women, parents, teenagers, etc.

Many different strategies are needed to combat the complex issues of crime and fear of

crime. A whole range of responses involving strategies in design, community action and

law enforcement would be required to achieve successfully the objective of crime

prevention. In this connection, there is widespread acknowledgement that planners,

architects and developers can play an important role in enhancing the safety of our

communities as they have a major influence in the design of the built environment.

Traditionally, the community has turned to the police and the judicial system to protect

them by deterring criminals and punishing offenders. The general public’s indifference

towards self-protection arises mainly from the lack of knowledge of the means of

protection, and perhaps a perception that somebody else - the government or insurance

companies - bears most of the cost of theft and vandalism.

On the other hand, Crime revention Through Environmental Design (C TED) asserts that

the community, homeowners, planners, developers and architects can play a greater

role in protecting the community and themselves from crime by integrating C TED

principles and concepts into the design and management of the physical environment.

In this connection, C TED may be viewed as a subset of the total set of measures required

for effective crime prevention and control.

I TRODUCTIO

Crime revention Through Environmental Design Guidebook 1

8 Crime revention Through Environmental Design Guidebook

I TRODUCTIO

The purpose of this guidebook is to raise awareness of homeowners, developers, architects,

and town planners on the concepts and principles of C TED. C TED seeks to enhance the

safety of developments and minimise the opportunities for crime to be committed. This

guidebook presents information, illustrations and suggestions on how this can be done through

the application of C TED.

Notwithstanding the relevance and usefulness of C TED, the recommendations in this

guidebook may not be compatible with the requirements, standards and codes of various

relevant authorities. In such situations, the demands of the authorities will take precedence

over the recommendations in this guidebook.

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CRIME PREVE TIO THROUGH E VIRO ME TAL DESIG PRI CIPLES

CRIME PREVE TIO THROUGH E VIRO ME TAL

DESIG PRI CIPLES

The basis of Crime revention Through Environmental Design (C TED) is that proper design and effective use of the built environment can reduce the incidence and fear of crime.

This in turn leads to improvements in the quality of life.

In contrast to the approach of addressing crime concerns by implementing visually

affronting security or target hardening measures such as locks, hard barriers, security gates,

security patrols, etc., C TED promotes high quality and visually pleasing solutions as first

responses that aim to enhance the legitimate use of space.

C TED can be applied without interfering with the normal use of the space. It is easy to

apply and can be economical to implement, especially if it is done early at the planning

and design stages of a project.

THE FOUR PRI CIPLES OF CPTED ARE:

• Natural surveillance

• Natural access control

• Territorial reinforcement

• Maintenance and management

There are strong overlaps and synergies among the four C TED principles. These have been

identified separately for convenience and clarity of understanding. In practice, it may be

useful to see all four principles as different facets of a single technique for dealing with the

security of the physical environment. In respect to the first two principles, the term ‘natural’

refers to deriving surveillance and access control results as a by-product of normal and

routine use of the environment.

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CRIME PREVE TIO THROUGH E VIRO ME TAL DESIG PRI CIPLES

ATURAL SURVEILLA CE

The fundamental premise is that criminals do not wish to be observed. Surveillance or the

placing of legitimate ‘eyes on the street’ increases the perceived risk to offenders. This may

also increase the actual risk to offenders if those observing are willing to act when potentially

threatening situations develop. So the primary aim of surveillance is not to keep intruders out

(although it may have that effect) but rather, to keep intruders under observation.

Natural surveillance can be achieved by a number of techniques. The flow of activities can be

channelled to put more people (observers) near a potential crime area. Windows, lighting

and the removal of obstructions can be placed to improve sight lines from within buildings.

ATURAL ACCESS CO TROL

Natural access control relies on doors, fences, shrubs, and other physical elements to keep

unauthorised persons out of a particular place if they do not have a legitimate reason for

being there. In its most elementary form, access control can be achieved in individual dwellings

or commercial establishments by the use of adequate locks, doors and window barriers.

However, when one moves beyond private property to public or semi-public spaces, the

application of access control needs more care. roperly located entrances, exits, fencing,

landscaping and lighting can subtly direct both foot and vehicular traffic in ways that decreases

criminal opportunities. Access control can be as simple as locating a front office to a warehouse.

While access control is more difficult on streets and areas that are entirely open to public use,

there are other techniques for controlling access in these circumstances. For example, non-

physical or ‘psychological’ barriers can be used to achieve the objective of access control.

These barriers may appear in the form of signs, paving textures, nature strips or anything that

announces the integrity and uniqueness of an area. The idea behind a psychological barrier is

that if a target seems strange, or difficult, it may also be unattractive to potential criminals.

Because any strategy that fosters access control is also likely to impede movement, careful

consideration should be given to access control strategies. Such strategies may limit the

opportunity for crimes, but should not hinder the mobility of potential victims.

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CRIME PREVE TIO THROUGH E VIRO ME TAL DESIG PRI CIPLES

TERRITORIAL REI FORCEME T

eople naturally protect a territory that they feel is their own, and have a certain respect for

the territory of others. Clear boundaries between public and private areas achieved by using

physical elements such as fences, pavement treatment, art, signs, good maintenance and

landscaping are ways to express ownership. Identifying intruders is much easier in such well-

defined spaces.

Territorial reinforcement can be seen to work when a space, by its clear legibility, transparency,

and directness, discourages potential offenders because of users’ familiarity with each other

and the surroundings.

MAI TE A CE A D MA AGEME T

This is related to the neighbourhood’s sense of ‘pride of place’ and territorial reinforcement.

The more dilapidated an area, the more likely it is to attract unwanted activities. The

maintenance and the ‘image’ of an area can have a major impact on whether it will become

targeted.

Another extension of the concept is that territorial concern, social cohesion and a general

sense of security can be reinforced through the development of the identity and image of a

community. This approach can improve not only the image of the population has of itself, and

its domain, but also the projection of that image to others.

With clear spatial definitions such as the subdivision of space into different degrees of public/

semi-public/ private areas and the raising of standards and expectations, the level of social

estrangement would decline. This is known to be related to reduction in opportunities for

aberrant or criminal behaviour, such as vandalism.

Maintenance and management need to be considered at the design stage, as the selection

of materials and finishes will impact on the types of maintenance regimes that can be sustained

over time. For example, plant material should be selected for its size at maturity to avoid blocking

of sight lines.

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CRIME PREVE TIO THROUGH E VIRO ME TAL DESIG PRI CIPLES

THE “THREE D” APPROACH

C TED involves the design of the physical space in the context of the normal and expected

use of that space by the users as well as the predictable behaviour of people around the

space. C TED emphasises the connection between the functional objectives of space utilisation

and behaviour management. Conceptually, the four C TED principles are applied through

the 3-D approach, i.e. Designation, Definition and Design. The 3-D approach is a simple space

assessment guide that helps the user in determining the appropriateness of how a space is

designed and used. The 3-D concept is based on the three functions or dimensions of human

space:

• All human space has some designated purpose.

• All human space has social, cultural, legal or physical definitions that prescribe desired

and acceptable behaviours.

• All human space is designed to support and control the desired behaviours.

By using the “Three D’s” as a guide, space may be evaluated by asking the following questions:

1. DESIG ATIO

• What is the designated purpose of this space?

• For what purpose was it originally intended?

• How well does the space support its current use or its intended use?

• Is there a conflict?

2. DEFI ITIO

• How is space defined?

• Is it clear who owns it?

• Where are its borders?

• Are there social or cultural definitions that affect how space is used?

• Are legal or administrative rules clearly set out and reinforced in policy?

• Are there signs?

• Is there conflict or confusion between purpose and definition?

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CRIME PREVE TIO THROUGH E VIRO ME TAL DESIG PRI CIPLES

For example, in a given space, certain behaviour or activities may be socially or culturally

discouraged while others may be clearly prohibited by display of written instructions or rules.

On the other hand, what is not acceptable in a certain space may be acceptable in others.

3. DESIG

• How well does the physical design support the intended function?

• How well does the physical design support the desired or accepted behaviours?

• Does the physical design conflict with or impede the productive use of the space or

the proper functioning of the intended human activity?

• Is there confusion or conflict in the manner in which physical design is intended to

control behaviour?

Consideration of these questions may reveal areas that requires changes or improvements.

For example, a space may need to have a designated purpose, it may need to be more

clearly defined, or it has to be better designed to support the intended function. Once these

questions have been considered, the information received may be used as a means of guiding

decisions about the design or modification of the space so that the objectives of space utilization

as well as natural surveillance, natural access control, territorial reinforcement and maintenance

and management can be better achieved.

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BASIC DESIG A D MA AGEME T STRATEGIES

BASIC DESIG A D MA AGEME T STRATEGIES

The four C TED principles can be translated into various planning and design strategies that would enhance security. These strategies can be categorised as follows:

1. allow for clear sight lines,

2. provide adequate lighting,

3. minimise concealed and isolated routes,

4. avoid entrapment,

5. reduce isolation,

6. promote land use mix,

7. use of activity generators,

8. create a sense of ownership through maintenance and management,

9. provide signs and information and

10. improve overall design of the built environment.

The decision of which strategy or combination of strategies to apply will depend on the site

condition, the functional requirements and the desired programming of the space, as well

as the design intent. These strategies are summarised in the checklist in Appendix A. Further

examples of C TED strategies that can be applied to various developments and public

spaces are listed in Appendices B and C respectively.

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BASIC DESIG A D MA AGEME T STRATEGIES

SIGHT LI ES

Sight line is defined as the desired line of vision in terms of both breath and depth. The inability

to see what is ahead along a route due to sharp corners, walls, earth berms, fences, bushes or

pillars can be serious impediments to the feeling of being safe. Large columns, tall fences, over

grown shrubbery and other barriers blocking sight lines adjacent to pedestrian paths could

shield an attacker. Alternatively, low hedges or planters, small trees, wrought iron or chain-link

fences, transparent reinforced glass, lawn or flower beds, benches allow users to see and be

seen and usually discourage crime and vandalism.

Reside tial apartme ts with wi dows overlooki g carpark a d park allow for clear sight li es

1. DESIG VISIBILITY

Design visibility in the built environment means allowing for clear sight lines and

avoiding isolated or hidden spaces. Recessed doorways can result in corners that

are hidden from casual surveillance. Sharp “blind” corners create the same problem,

especially on stairs or corridors where there may be no alternative routes of escape.

Sudden changes of grade on walkways can also create “blind spots”. Certain

improvements can be made. For example, columns and walls can be tucked into

the built design as protrusions can hinder visibility. Visibility can also be improved through

modification such as creation of windows and other openings in otherwise blank walls

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BASIC DESIG A D MA AGEME T STRATEGIES

and removal of protrusions along walls. Improving visibility through such modifications

will permit natural surveillance. Similarly, the location and design of fences, shrubbery

and berms must also be carefully studied when design visibility is essential. In blind spots

where no modification to the building is possible, the use of security mirrors or other

security devices such as video cameras would be necessary even though these are not

optimal solutions.

2. PROBLEMATIC SPACES

Visibility should especially be taken into account when designing or planning spaces

where risk to personal safety is perceived to be high, such as stairwells in multi-storey car

parks, underpasses and lobby entrances to high-rise buildings.

3. FUTURE SIGHT LI E IMPEDIME TS

As the landscape matures over time, unintended screens, barriers or hiding places could

be created. Therefore, planting in a landscape must take into consideration the growth,

final height and habit of the plants. lantings are best made with due consideration to

the resources to be committed to their maintenance so as to ensure that the original

sight lines designed do not get obscured over time.

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BASIC DESIG A D MA AGEME T STRATEGIES

LIGHTI G

Sufficient lighting is necessary for people to see and be seen. From a security point of view,

lighting that is strategically placed can have a substantial impact on reducing the fear of

crime. A basic level of lighting should allow the identification of a face from a distance of

about 10 metres for a person with normal vision.

Exterior lighti g for ight time use should provide adequate visibility

1. MI IMUM STA DARDS

If the area is intended for night time use, lighting should provide adequate visibility.

edestrian walkways, back lanes and access routes open to public spaces should be lit

so that a person with normal vision is able to identify a face from a distance of about 10

metres. Inset spaces, signs, entrances and exits should be adequately lit. On the other

hand, lighting of different wattage, colour temperature and rendition may also be used

to make certain public areas “less hospitable” to gathering for long periods.

2. PATHS OT I TE DED FOR IGHT TIME USE

Lighting is not desirable in an isolated area or for a path leading to some obscure places.

Lighting such areas may provide a false sense of confidence for people during night

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BASIC DESIG A D MA AGEME T STRATEGIES

time use. The paths or spaces not intended for night time use could be fenced off and

remained unlit to avoid giving a false sense of security or impression of being used.

3. CO SISTE CY OF LIGHTI G

Lighting should be uniformly spread to reduce contrast between shadows and illuminated

areas. More fixtures with lower wattage rather than fewer fixtures with higher wattage

help reduce deep shadows and avoid excessive glare.

4. DESIG I G FOR IGHT TIME USE

Design proposals should take into account the night time use of the outdoor spaces

and specify the type, placement and intensity of lighting.

5. PROTECTIO OF LIGHTI G

Light fixtures should be protected against casual vandalism by means of vandal resistant

materials and design.

6. PLACEME T OF LIGHTI G

Lighting should also be directed on roadside pavement and possible entrapment spaces

other than on roads. Lighting should take into account vegetation, such as mature trees,

and other obstructions that would cause light to be blocked off.

7. BUILDI G MATERIALS

Light colour finishes on walls and ceilings should be used for places such as car parks

and isolated routes leading to it. This may be preferred to using lights of higher intensity

that consume more energy and are costlier to maintain.

8. MAI TE A CE

Lighting requires maintenance to preserve visibility. Bushes and trees that block off

light should be trimmed. Lighting fixtures should be located at suitable heights for easy

maintenance and replacement. Light fixtures should be maintained in a clean condition

and promptly replaced if burnt or broken. osting information indicating who to call in

case of burnout or vandalised lights is desirable.

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BASIC DESIG A D MA AGEME T STRATEGIES

CO CEALED OR ISOLATED ROUTES

Concealed or isolated routes are often predictable routes that do not offer alternative for

pedestrians. An attacker can predict where pedestrians will end up once they are on the

path. Examples are underpasses, pedestrian overhead bridges, escalators and staircases.

redictable routes are of particular concern when they are isolated or when they terminate in

entrapment areas.

See through fe ci g coveri g a predictable route provides visibility

1. VISIBILITY OF CO CEALED OR ISOLATED ROUTES

If there is a need for the concealed or isolated route, it should be designed to incorporate

visibility. If there is an existing concealed or isolated route and security is in question, it

should be modified or eliminated. Concealed or isolated routes can be made safer by

bringing in more activities, ensuring clear sight lines, improving lighting, installing

emergency telephones and electronic surveillance devices.

2. LOCATIO OF CO CEALED OR ISOLATED ROUTES EAR E TRAPME T AREAS

If there is an entrapment area or isolated area within 50 to 100 metres of the end of a

concealed or isolated route, it should be modified or eliminated. An entrapment area

located near a concealed or isolated route such as a tunnel or an isolated path provides

the attacker with an opportunity to take a victim to a nearby entrapment area where a

more serious crime could be committed.

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3. ATURAL SURVEILLA CE

Natural surveillance of a concealed or isolated route should be encouraged. A stair or a

ramp may be located such that it has external glazed/ open areas and has a view from

the surrounding properties.

4. SIGHT LI ES

If a pedestrian cannot see what is on or at the end of a concealed or predictable route,

the visibility should be improved by lighting and/ or the use of a reflective surface such

as mirror.

5. LIGHTI G

Concealed or isolated routes should be adequately and uniformly lit. Lighting should be

vandal proof and properly located. Light coloured walls and ceiling materials help to

reflect light and can enhance the brightness of an area. Natural lighting is preferred

and should be encouraged.

6. SURVEILLA CE THROUGH HARDWARE

If a concealed or isolated route is enclosed and prone to crime e.g. passageway or

stairwell, surveillance through security hardware should be considered and these

hardware should be properly monitored.

7. ACCESS TO HELP

Emergency telephones, intercoms, security alarms should be installed to concealed or

isolated routes to allow users to summon help in emergency.

8. ALTER ATIVE ROUTE SIG

Signs should be placed at the entrance to indicate alternative well-lit and/ or frequently

travelled routes. Certain pedestrian walkways, in the city for example, may be preferable

during day time hours only. As such, an alternate route should be indicated for evenings

and weekends at the entrance.

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BASIC DESIG A D MA AGEME T STRATEGIES

E TRAPME T AREAS

Entrapment areas are small, confined areas near or adjacent to well-travelled routes that are

shielded on three sides by some barriers, such as walls or bushes. Examples are lifts,

tunnels or bridges, enclosed and isolated stairwells, dark recessed entrances that may be

locked at night, gaps in tall vegetation, a vacant site closed from three side by barriers, narrow

deep recessed area for fire escape, grade-separated driveways or loading/ unloading areas

off a pedestrian route. arking lots, petrol kiosks and school buildings isolated by school yards

can also become entrapment areas, especially when there is less activity after operating hours.

A e trapme t area ca be secured

with some form of surveilla ce

1. ELIMI ATIO OF E TRAPME T AREA

If there is an entrapment area, such as a hidden area below or above ground, a private

dead alley, a walled area or a storage area adjacent to a main pedestrian route, it

should be eliminated.

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BASIC DESIG A D MA AGEME T STRATEGIES

2. CLOSI G OF E TRAPME T AREA AFTER OPERATI G HOURS

If elimination of an entrapment area is not possible, it should be locked or closed after

operating hours. For instance, a passageway connection to a locked building should

be locked as well.

3. VISIBILITY

It is preferable to have natural surveillance. However, if an entrapment area is

unavoidable, the area should be well lit with some form of formal surveillance. In the

case of lifts, incorporation of glass windows in the design of lift doors would be helpful.

4. ESCAPE ROUTE A D HELP

Design should provide for an opportunity to escape and find help. For example, fenced

parking areas can have more than one pedestrian exit points. Deep recessed fire escape

could act as an entrapment area despite being lit and thus it should be avoided.

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Crime revention Through Environmental Design Guidebook 23

BASIC DESIG A D MA AGEME T STRATEGIES

ISOLATIO

Most people feel insecure in isolated areas especially if people judge that signs of distress or

yelling will not be seen or heard. eople may shy away from isolated areas and in turn such

places could be perceived to be even more unsafe. Natural surveillance from adjoining

commercial and residential buildings helps mitigate the sense of isolation, as does planning or

programming activities for a greater intensity and variety of use. Surveillance by the police

and other security personnel to see all places at all times is not practical, nor economical.

Some dangerous or isolated areas may need formal surveillance in the form of security

hardware, i.e. audio and monitoring systems. Aside from its cost, the hardware must be watched

efficiently and attentively by staff trained for emergencies.

Ba ki g facilities ca be located ear pedestria activities to reduce se se of isolatio

1. ATURAL SURVEILLA CE OF ISOLATED ROUTES A D PUBLIC SPACES

Natural surveillance of public spaces such as plazas, open green spaces, isolated

pedestrian routes and car parks should be encouraged through planning and design.

Blank facades or buildings set far back at street level should be avoided as they can

create a sense of isolation.

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2. PROBLEMATIC ROUTES

Isolated routes to and from car parks should preferably be overlooked by surrounding

buildings. In a low rise development, it is desirable to provide parking so that there is

natural surveillance from the occupants of the buildings or surrounding areas.

3. FORMAL SURVEILLA CE

Telephones, emergency telephones or panic alarms should be adequately indicated

by signs. Video cameras and patrols could help monitor isolated areas.

4. I CREASI G ACTIVITIES

Compatible land use and activity generators create activities, thereby allowing

visibility by users.

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BASIC DESIG A D MA AGEME T STRATEGIES

LA D USE MIX

A balanced land use mix is important for environmental, economic, aesthetic and safety

reasons. Mixed uses must be compatible with one another and with what the community

needs. For a residential development, a number of uses can be included by having a main

street, a town square or park, prominent civic buildings and above all the ability of residents to

walk to the place of work, to day care centres and to shops. The social value of frequenting

local businesses provides a sense of security and safety as the local business people “watch”

the street. Generally, any design concept that encourages a land use mix will provide more

interaction and a safer place.

Compatible mixed uses ca e courage activity,

atural surveilla ce a d co tact amo g people

1. COMPATIBLE MIXED USES

Mixed uses should be compatible in order to encourage activity, natural surveillance

and contact among people throughout the day. The first purpose in mixing uses should

be to provide adequate and appropriate services to the primary users of an area.

Examples include convenience retail shops, personal service shops and offices in

primarily residential areas, especially if they provide local employment opportunities.

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Childcare centres, health and fitness clubs and grocery stores in office areas including

the possibility of adding residential uses at a later date, are other examples of compatible

mixed uses.

2. BALA CI G LA D USES

Land uses such as pubs, clubs and bars are inevitable elements of urban life. However,

they can be perceived as negative or undesirable depending on their locations in the

neighbourhood. In order to minimise their impacts on the community, such uses should

be balanced with positive measures by carefully selecting their locations in relation to

surrounding uses.

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BASIC DESIG A D MA AGEME T STRATEGIES

ACTIVITY GE ERATORS

Activity generators are uses or facilities that attract people, create activities and add life to

the street or space and thus help reduce the opportunities for crime. Activity generators include

everything from increasing recreational facilities in a park, to placing housing in the central

business district or adding a restaurant to an office building. They can be provided on a small

scale or be added as supporting land use, or intensifying a particular use.

Ope space withi the ce tral busi ess district ca be used for various activities

1. COMPLEME TARY USES

Complementary uses should be introduced, to provide surveillance to potentially isolated

areas, e.g. by locating administration office, lounge, TV room facing back lanes or side

entrances.

2. REI FORCI G ACTIVITY GE ERATORS

Activity generators should be located along an “active edge” or along one or two

pedestrian paths in large parks or on the boundary of large developments. An “active

edge” creates a boundary of space that is inviting rather than threatening to passers-

by. Appropriately licensed street vendors or food vendors should be encouraged in

parks and the sensitive placement of seating areas informally generates activity along

the edge of a path.

Crime revention Through Environmental Design Guidebook 21

28 Crime revention Through Environmental Design Guidebook

BASIC DESIG A D MA AGEME T STRATEGIES

3. DESIG FOR PROGRAMMI G ACTIVITY MIX

ark planning and design should provide opportunities for enhanced programming,

such as cultural, recreational and community activities.

4. GROU D-LEVEL ACTIVITY

edestrian oriented activities should be encouraged at ground level in high and medium

density areas. Increased density generally attracts more people and may create more

anonymity and a sense of fear. This sense of fear can be mitigated by creating more

ground level activities such as retail which could add “eyes” on the street.

22 Crime revention Through Environmental Design Guidebook

Crime revention Through Environmental Design Guidebook 29

BASIC DESIG A D MA AGEME T STRATEGIES

OW ERSHIP, MAI TE A CE A D MA AGEME T

Sense of ownership, or territoriality, is often considered a vital factor in making a place safer.

Taking responsibility and caring for an environment helps make it safer. If residents in a residential

estate for instance, feel that the areas outside their doors do not belong to them, they will feel

less safe, and will be less likely to intervene in a dangerous situation. Not knowing who has

formal ownership contributes to insecurity since it is not clear who to report the problems to.

On the other hand, measures taken to increase the sense of territoriality may sometimes increase

opportunities for crime. The visual or real barriers separating many new housing developments

from surrounding neighbourhoods may isolate residents from the wider community.

Artwork by reside ts of a apartme t block at grou d level promote se se of ow ership

1. TERRITORIAL REI FORCEME T

The properties that are normally not protected and that can easily be intruded should

be defined by the presence of design features and maintenance. For example, poorly

defined front and rear yards could be defined by a small fence or by regular maintenance

of the surrounding landscape.

Crime revention Through Environmental Design Guidebook 23

30 Crime revention Through Environmental Design Guidebook

BASIC DESIG A D MA AGEME T STRATEGIES

2. USE OF MATERIALS

Materials used for common facilities should be vandal resistant so that maintenance is

minimal. Street furniture should be made of durable and vandal resistant materials.

3. MAI TE A CE E FORCEME T

roperties should be well maintained to create a perception of ownership and safety.

Building maintenance by law enforcement is a critical part of fostering a sense of

ownership.

4. REPORTI G MAI TE A CE

Well displayed telephone numbers or web sites to call for repairs and report vandalism

to properties, especially in public areas are desirable. For example, a broken lock, door

or window or light could be reported.

5. MAI TE A CE PRIORITIES

Offensive graffiti should be promptly removed either by the property manager or the

public authority. Response to litter pickup and repairs should be prompt. A well maintained

space gives an impression of ‘ownership’ and ‘care’.

6. MA AGEME T

Efficient programming and management of spaces, formal surveillance and good

maintenance, for example by the management corporations of condominiums, and

town councils taking care of public housing, can also enhance personal safety. If prompt

attention is not given to maintaining a property, the result of lack of maintenance can

contribute to a sense of fear.

24 Crime revention Through Environmental Design Guidebook

Crime revention Through Environmental Design Guidebook 31

BASIC DESIG A D MA AGEME T STRATEGIES

SIG S A D I FORMATIO

Well designed, strategically located signs and maps contribute to a feeling of security. Signs

should be standardised to give clear, consistent, concise and readable messages from the

street. Having addresses lit up at night will make them even more visible. Where it is difficult to

find one’s way around; signs with maps may help. Signs must be visible, easily understood and

well maintained. Graffiti and other vandalism can make signs unreadable. If signs are in disrepair

or vandalised, it gives an impression of lack of ownership and thus adds to a sense of fear.

Maps a d directories should be well desig ed a d strategically located

1. SIG DESIG

Signs should be large, legible and identifiable. The use of strong colours, standard symbols,

simple shapes and graphics is recommended for signs of washrooms, telephones,

information and help.

MESSAGE

Signs should convey the message with adequate information. For example, it should

indicate where to go for assistance or help, or where the telephones and washrooms

are, or the hours of operation of a underpass. The message should be conveyed in

suitable language(s) or pictographs.

Crime revention Through Environmental Design Guidebook 25

2

32 Crime revention Through Environmental Design Guidebook

BASIC DESIG A D MA AGEME T STRATEGIES

3. SIG LOCATIO

Signs should be strategically located at entrances and near activity nodes (e.g.,

intersections of corridors or paths) and placed for visibility at an appropriate height.

4. MAI TE A CE

Signs should be maintained on a regular basis to ensure that they are visible. This may

involve trimming any landscaping growth or cleaning the sign. Clear signs in a car park

help users to identify their location.

5. MAPS

In large parks and buildings, maps or leaflets containing information appropriate to the

different needs of various groups of users should be available.

6. HOURS OF OPERATIO

Where and when exits are closed should be indicated at the entrance of a route.

26 Crime revention Through Environmental Design Guidebook

Crime revention Through Environmental Design Guidebook 33

1

BASIC DESIG A D MA AGEME T STRATEGIES

OVERALL DESIG

The design and management of the environment influences human behaviour. A barren, sterile

place surrounded with security hardware will reinforce a climate of fear, while a vibrant and

beautiful place conveys confidence and care. Both the functional and aesthetic values of

public and semi-public spaces contribute to a sense of safety. In particular, the degree to

which users can find their way around influences the sense of security. Good design reinforces

natural use of space and lessens the need to depend on signs in order to find one’s way

around.

Good fu ctio al a d aesthetic desig ca co tribute to a se se of safety

IMPORTA CE OF QUALITY A D BEAUTY

The design of the space, besides fulfilling functional objectives, should create an

aesthetically pleasing environment that a person can enjoy. The security aspects should

be considered as part and parcel of designing the space and fulfilling aesthetic values.

2. DESIG CLARITY

The design of the space should be easy to understand. The entrances and exits, the

places to find people and the places to find services such as washrooms or telephones

should be easy to find for a person visiting the place for the first time. The more complex

Crime revention Through Environmental Design Guidebook 27

34 Crime revention Through Environmental Design Guidebook

BASIC DESIG A D MA AGEME T STRATEGIES

a space, the more signs and other measures to improve accessibility need to be provided

and this may lead to more confusion. An inviting environment creates an image that

attracts people.

3. AVOID U USABLE SPACES

The purpose for designing a space should be clear. Unused and unusable “dead spaces”

should be avoided.

4. IGHT TIME USE

The design of the space should address night time use.

5 CO STRUCTIO MATERIALS

For better public safety and security, the design of the space should take into

consideration appropriate materials, its placement, colour and texture to make the space

inviting or uninviting. For example: bright and vibrant finishes create a sense of safety.

28 Crime revention Through Environmental Design Guidebook

APPENDIX A: CHECK IST

CHECK IST

The design guide is summarised in the form of a checklist. The questions help you to go through the security aspects of a project. The checklist will provide an initial crime prevention

through environmental design review for the project.

1. Sight lines

2. Lighting

3. Concealed or Isolated Routes

4. Entrapment Areas

5. Isolation

6. Land Use Mix

7. Activity Generators

8. Ownership, Maintenance, and Management

9. Signs and Information

10. Overall Design

Appendix A

Crime revention Through Environmental Design Guidebook 29

APPENDIX A: CHECK IST

Design guide for reviewing project – CHECK IST

1. SIGHT INES Yes No

• Can sharp corners or sudden changes in grades that reduce sight lines • • be avoided or modified?

• Does design allow clear sight lines and visibility at those areas where • • they are desired?

• Do areas of concerns such as stairwells, lobbies of high-rise building • • have clear sight lines?

• If sight lines are blocked, can it be made visible by using glass or can • • other enhancements such as mirrors or security cameras be provided?

• Does design allow for future sight line impediments such as landscaping • • in maturity?

• Does access to hidden areas such as underpasses or parking areas have • • clear sight lines?

2. IGHTING

• Is there a need for lighting to be provided if the paths or spaces are not • • used at night?

• Is lighting adequately provided such that a person can recognise a face • • from about 10 metres?

• Does lighting provide uniform spread and reduce contrast between • • shadow and illuminated areas?

• Is lighting provided too glaring? • •

• Are light fixtures provided for areas that require good visibility such as • • pedestrian routes and entrapment areas?

• Are light fixtures protected against vandalism or made of vandal resistant • • materials?

30 Crime revention Through Environmental Design Guidebook

• •

• •

• •

• •

• •

• •

• •

• •

• •

• •

• •

• •

• •

• •

APPENDIX A: CHECK IST

• Is lighting at areas used during night time e.g. car parks, space around

buildings adequately provided?

• Is back lane lighting required?

3. CONCEA ED OR ISO ATED ROUTES

• Can concealed and isolated routes such as staircases, passageways or

tunnels be eliminated?

• Are there entrapment areas within 50 - 100 metres at the end of a

concealed or isolated route?

• Is there an alternate route?

• If a pedestrian cannot see the end of a concealed or isolated route, can

visibility be enhanced by lighting or improving natural surveillance?

• Are concealed or isolated routes uniformly lit?

• Is there natural surveillance by people or activities through various land

uses?

• Is there formal surveillance?

• Is access to help e.g. security alarm, emergency telephones, signage and

information available?

4. ENTRAPMENT AREAS

• Is there an entrapment area and can it be eliminated?

• Can it be closed during off hours?

• Is the entrapment area visible through natural or formal surveillance?

• Does design provide for escape routes?

Yes No

Crime revention Through Environmental Design Guidebook 31

• •

• •

• •

• •

• •

• •

• •

• •

• •

• •

• •

• •

• •

• •

• •

APPENDIX A: CHECK IST

5. ISO ATION

• Does design incorporate natural surveillance?

• Do areas of concerns such as isolated routes and parking areas provide

natural surveillance?

• If providing natural surveillance is not possible, are emergency telephones,

panic alarm and attendants provided?

• Can compatible land uses be provided to increase activity?

6. AND USE MIX

• Are different land uses compatible?

• Can land uses that raise security concerns e.g. bars and pubs, be located

where their impact is minimised?

7. ACTIVITY GENERATORS

• Can complementary uses that promote natural surveillance be provided?

• Does design provide for complementary users?

• Does design reinforce activity?

• Is the area programmed for various events or activities?

• Can a clustering of uses be used to support the intended activity?

• Are ground level activities incorporated in design?

• Can areas be programmed to facilitate increased activity?

8. OWNERSHIP, MAINTENANCE & MANAGEMENT

• Does the design provide territorial reinforcement through design features?

• Does the design allowed for easy maintenance?

Yes No

32 Crime revention Through Environmental Design Guidebook

• •

• •

• •

• •

• •

• •

• •

• •

• •

• •

• •

• •

• •

• •

• •

APPENDIX A: CHECK IST

• Are there signs and information to guide people on how to report

maintenance?

• Does the management of space provide maintenance priorities e.g.

removal of offensive graffiti?

9. SIGNS AND INFORMATION

• Are signs visible and legible?

• Are signs conveying messages clearly?

• Is information adequate?

• Are sign strategically located to allow for maximum visibility?

• Are signs well maintained?

• Are maps provided in large areas such as underpasses, parks, etc.?

• Are signs displaying hours of operation?

10. OVERA DESIGN

• Do quality and aesthetically pleasing built environments compromise

security concerns?

• Is the scale of development consistent with neighbours to avoid large

gaps on streets?

• Is design of the built environment simple and easy to understand?

• Is there space that can become dead space?

• How is the built environment used at night time?

• Are construction materials used to enhance safety and security?

Yes No

Crime revention Through Environmental Design Guidebook 33

APPENDIX B: EXAMP ES OF CPTED STRATEGIES APP ICAB E TO VARIOUS DEVE OPMENTS

EXAMP ES OF CPTED STRATEGIES APP ICAB E TO VARIOUS DEVE OPMENTS

CONDOMINIUMS AND PUB IC HOUSING

Residen ial apar men s overlooking ou door play areas provide na ural surveilance

1. SIGHT INES AND HIDDEN SPOTS

Essential walkways through the area leading to and from MRT/ LRT stations, bus stops,

parking lots and retail areas should have clear sight lines. The lift lobby should be

open and visible from the interior of the building or the street.

Avoid hidden areas in corridors and stairwells. If not possible, use transparent materials

or lift doors with glass windows and security mirrors to improve sight lines.

The interior of a lift may need installation of surveillance cameras or an angled mirror

if the entire interior area is not visible to a person about to enter.

Appendix B

34 Crime revention Through Environmental Design Guidebook

APPENDIX B: EXAMP ES OF CPTED STRATEGIES APP ICAB E TO VARIOUS DEVE OPMENTS

2. OPTIMISING USE AT GROUND EVE

Empty space should be used for housing, commercial and community services that are

complementary to the needs of the residents.

3. ACCESS TO INDIVIDUA BUI DINGS

Entrance areas to individual buildings should be clearly visible from adjacent streets and

apartments.

4. SIGNS

Street names and block numbers should be visible from the public road as well as within

the development.

Site maps at central locations may be located for visitors, delivery people and emergency

services.

5. IGHTING

edestrian walkways leading to buildings and car parks should be lit to public street

standards.

Lighting of common areas such as corridors, lift lobbies and stairwells should be adequate

and areas of shadows should be avoided.

6. FORMA SURVEI ANCE

Management and maintenance staff should be trained to respond to emergencies.

Residents should be encouraged to report suspicious activities.

Security or maintenance staff should patrol parking areas and other common areas.

7. PARKING

arking areas and access should be visible and well lit.

Visitor parking should be designated.

arking within a building should be access controlled, well lit, properly signed and

preferably with formal surveillance.

Crime revention Through Environmental Design Guidebook 35

APPENDIX B: EXAMP ES OF CPTED STRATEGIES APP ICAB E TO VARIOUS DEVE OPMENTS

8. MANAGEMENT OF BUI T SPACE AND SECURITY

Management should have explicit policies related to security that allow for improving

the quality of the environment and fostering a sense of common purpose.

9. OCATION OF ACTIVITY GENERATORS

Outdoor play areas should be placed at safe locations where natural surveillance is

possible.

10. NATURA SURVEI ANCE

Drain pipes, parapets and ledges should not be located near windows, corridors

and balconies. If unavoidable, they should face car parks, children’s playground or

roads to allow for natural surveillance.

Mailing boxes should be visible by the residents at the interior of the building corridor or

lifts or stairs.

ANDED DEVE OPMENTS

An ac ive residen commi ee can promo e proper managemen of he neighbourhood

1. STREET PATTERN

The street pattern should be designed and/ or modified to reduce the opportunities for

crime within the housing estates by maintaining simple and predictable grid patterns

and by observing the following:

36 Crime revention Through Environmental Design Guidebook

APPENDIX B: EXAMP ES OF CPTED STRATEGIES APP ICAB E TO VARIOUS DEVE OPMENTS

• reduce the number of intersections;

• access points to the neighbourhood should be highly visible;

• major traffic routes should not pass through the neighbourhood;

• conflict between pedestrian and vehicular traffic should be minimised to encourage

pedestrian activity; and

• street pattern should be designed such that it is easy to find an address especially by

emergency services.

2. AND USE PATTERN

Commercial uses such as retail shops and offices should be located on main roads.

On the other hand, incompatible uses such as having a bar next to a school or religious

assembly building should be avoided.

3. SCA E

The scale of new developments should be compatible with the surrounding developments.

4. MANAGEMENT AND MAINTENANCE

Sidewalks should be cleared of undesirable litter.

Neighbourhoods should be well managed by an active resident committee.

Safety audits may be conducted to identify problems in the neighbourhood.

Maintenance problems such as litter, vandalism, graffiti, burnt out lights on private property

should be reported to the property owners/ management and dealt with.

5. OPEN SPACES

Open spaces and walkways should be designed to enhance security and safety.

Crime revention Through Environmental Design Guidebook 37

APPENDIX B: EXAMP ES OF CPTED STRATEGIES APP ICAB E TO VARIOUS DEVE OPMENTS

6. SIGN AND INFORMATION

Signs may display maps at the entrances of individual developments indicating road

names and block addresses.

This displayed information should be readable to motorists from a distance of at least

20 metres.

7. NATURA SURVEI ANCE AND ACTIVITY GENERATORS

Opportunities for natural surveillance on the street should be introduced by encouraging

front porches, balconies, more windows and convenience stores.

Open railings at balconies would be preferred to solid parapet walls.

8. CONTINUITY AND C EAR OWNERSHIP

Entrances should be accentuated and well defined with landscaping, architectural

design, lighting or symbolic gateways.

Fences that allow visibility from the street would be preferred.

Gaps such as empty lots should be given priorities for lighting and fencing.

9. STREET AND BACK ANE IGHTING

Lighting should be of sufficient intensity to light the sidewalk as well as the street.

Trees and bushes should be trimmed adequately to allow unobstructed lighting.

Accesses from dwelling units to back lanes should be well lit and clearly visible from the

street.

38 Crime revention Through Environmental Design Guidebook

APPENDIX B: EXAMP ES OF CPTED STRATEGIES APP ICAB E TO VARIOUS DEVE OPMENTS

Re ail and en er ainmen uses a s ree fron ages a rac and enhance pedes rian ac ivi ies

CENTRA BUSINESS DISTRICT/ REGIONA CENTRES/ TOWN CENTRES

1. NATURA SURVEI ANCE THROUGH GENERATING STREET-RE ATED EVENING ACTIVITIES

Building along street frontages should be enhanced and strengthened by incorporating

pedestrian oriented activities.

Retail and entertainment uses that open late such as restaurants and theatres should be

encouraged at street level.

2. AND USE MIX - RESIDENTIA

A variety of land use mix should be encouraged with emphasis on residential and

appropriate supporting services. As such, sidewalk cafes, street entertainers and street

vendors which generate pedestrian activities could be introduced into the central

business district, regional and town centres.

3. ACTIVITY GENERATION

Cultural and entertainment activities should be encouraged. These uses bring vitality

after business hours and increase appeal for hotels, restaurants, shops and more business

to locate within the central business district, regional and town centres, thereby attracting

more people and tourists.

Crime revention Through Environmental Design Guidebook 39

APPENDIX B: EXAMP ES OF CPTED STRATEGIES APP ICAB E TO VARIOUS DEVE OPMENTS

4. PEDESTRIAN ENVIRONMENT

edestrian environment should be visible.

Special treatment of sidewalks with adequate width, trees, lighting, banners, street

furniture could contribute to an attractive and comfortable pedestrian environment.

OFFICES/ RETAI S/ HOTE S

Clear line of sigh from recep ion desk allows easy surveillance of en rance

1. OCATION OF WASHROOMS

Washroom entrances should be highly visible.

If the washroom entrance is through a corridor, it should be made visible from the shopping

area. Alternatively, the security office could be located in close proximity to the washroom

corridor.

2. SIGHT INES

Receptionists should have clear sight lines of entrance areas from their workstations.

Receptionists should have communication link with security staff or other workers in case

of an emergency. Security numbers could also be posted in the office.

40 Crime revention Through Environmental Design Guidebook

APPENDIX B: EXAMP ES OF CPTED STRATEGIES APP ICAB E TO VARIOUS DEVE OPMENTS

3. REDUCTION OF ENTRAPMENT AREAS

Back lanes and loading/ unloading areas should be well lit.

Access to the service areas should be lockable.

Vacant properties should allow for natural surveillance so that there are no hidden spots

that can act as entrapment areas.

ublic telephones and ATMs should be located in areas of high use and away from

entrapment areas.

4. C USTERING OF USES

Shops that open late should be clustered in one area, preferably near the entrance of

the building.

5. SITTING AREAS

Ensure that public seating is located in areas which discourage loitering but enhance

natural surveillance by placing seating in high traffic areas with clear sight lines in a

number of directions.

6. SIGNAGE

Signs should be posted for washrooms, telephones, and other amenity areas in the

shopping areas.

7. IGHTING AND SURVEI ANCE IN PARKING AREAS

Surface parking area should be adequately lit.

For buildings with built-in car parks, the access to the car park and its interior should be

well lit, free from entrapment areas with clear sight lines.

Avoid locating loading areas at entrapment areas.

Stairs or lift lobbies should be visible and allow for natural surveillance.

8. FORMA SURVEI ANCE

There should be formal mechanical surveillance for areas and accesses to shops that

operate late hours and facilities such as ATMs.

Crime revention Through Environmental Design Guidebook 41

APPENDIX B: EXAMP ES OF CPTED STRATEGIES APP ICAB E TO VARIOUS DEVE OPMENTS

Organised security patrol in areas very prone to crime and vandalism is desirable.

Formal surveillance is encouraged in areas prone to loitering problems.

Management should monitor the access to the building.

Offices should be connected directly to security staff.

9. ACCESS TO ROOF TOP

There should not be unauthorised access to roof tops from within or from adjacent

buildings.

EDUCATIONA INSTITUTIONS AND SCHOO S

Loca ion and landscaping of school can be arranged o encourage na ural surveillance from surrounding buildings and s ree s

1. OCATION OF SCHOO YARDS

Location and landscaping of school yards should be such that it encourages natural

surveillance from surrounding buildings and streets.

2. OPTIMISING AND USE

If possible, activities such as the use of school facilities for community activities or sports

activities to bring people into the school yard after school hours should be encouraged.

42 Crime revention Through Environmental Design Guidebook

APPENDIX B: EXAMP ES OF CPTED STRATEGIES APP ICAB E TO VARIOUS DEVE OPMENTS

Supervised recreation activities before and after school hours should be encouraged.

3. WA KWAYS

Frequently used walkways between buildings and other isolated walkways should be

well lit to city street standards.

Walkways should avoid entrapment areas.

Emergency telephones should be well signed and lit along the walkways and bicycle

tracks.

4. SIGHT INES AND POTENTIA ENTRAPMENT AREAS

Major walkways, bicycle tracks and entrances to buildings should have clear sight lines.

5. SIGNAGE

Besides other prominent signs, polytechnic and university campuses should include signs

for emergency telephones along bicycle tracks, walkways and other isolated areas.

6. WASHROOMS

Washrooms should be well lit, visible and should not be located at isolated or remote

areas.

7. FORMA SURVEI ANCE

Walkways, bicycle tracks and parking areas should be regularly patrolled by the campus

security.

Surveillance through hardware may be provided for any underpass connections between

buildings.

Crime revention Through Environmental Design Guidebook 43

APPENDIX B: EXAMP ES OF CPTED STRATEGIES APP ICAB E TO VARIOUS DEVE OPMENTS

INDUSTRIA AREAS

Nea , visible and well-li loading/ unloading areas minimise po en ial for hiding

1. SIGHT INES

Land parcels and buildings should be visible from public or secondary roads.

Driveways should meet in areas where there are activities and orientation of buildings

could be such that driveways are visible from the buildings.

The path to parking lots, bus stops and taxi stands should be visible from the buildings

that they serve.

Avoid dead end driveways and street should be designed to increase surveillance

opportunities from passing traffic and patrol.

Avoid creating hiding places such as alleys, storage yards, loading/ unloading areas

and so on.

arking lots should be visible from the street and well lit for night shift.

2. AND USE MIX - INTENSIFICATION OF ACTIVITY AND DEVE OPMENT

Activities and developments that should bring in a steady stream of people to make the

area less isolated should be encouraged, e.g. housing on the fringe, eating places,

recreational areas etc.

44 Crime revention Through Environmental Design Guidebook

APPENDIX B: EXAMP ES OF CPTED STRATEGIES APP ICAB E TO VARIOUS DEVE OPMENTS

3. IGHTING

Lighting along entrance paths to buildings should be provided at the same level as

street lighting.

Back lanes and loading docks should be well lit.

Internal footpaths should be well-lit and visible from buildings.

Lighting should illuminate entrapment areas such as the entrances to loading/ unloading

areas.

Reporting of burnt out or vandalised lights should be encouraged.

4. ANDSCAPE

Trees and hedges along public or secondary roads should not obstruct visibility from

buildings.

Hedges if necessary should not become convenient hiding spaces and could be spaced

out to avoid total visual obstruction. This also applies to internal landscaping.

5. PARKING

arking lots should be visible from the street and well lit.

Visitor parking should be designated.

6. OCATION OF WASHROOMS

Washrooms should be well lit.

Entrance should be highly visible and not tucked away in inconspicuous locations.

7. SURVEI ANCE AND HOUSE KEEPING

Drain pipes, parapets and ledges should not be located near windows, corridors and

balconies. If unavoidable, they should face car parks, children’s playgrounds or roads

to allow for natural surveillance.

arking lots, bus stops and taxi stands should preferably be visible from the workstations

of building security personnel.

Crime revention Through Environmental Design Guidebook 45

APPENDIX B: EXAMP ES OF CPTED STRATEGIES APP ICAB E TO VARIOUS DEVE OPMENTS

Security or maintenance personnel should patrol parking and common areas and

monitor access to buildings.

Common areas that do not have good visibility with the surroundings should be equipped

with surveillance hardware.

Avoid locating loading areas at entrapment areas.

Good housekeeping should be encouraged to minimise hiding places.

46 Crime revention Through Environmental Design Guidebook

APPENDIX C: EXAMP ES OF CPTED STRATEGIES APP ICAB E TO PUB IC SPACES

CAR PARKS

1. SIGHT INES AND POTENTIA ENTRAPMENT AREAS

Stairwells and lift lobbies should be located where they can be viewed by the

maximum number of people, for instance, near the outer edge of a building where

there is a glass wall, or at the entrance to a shopping area.

Major route(s) in the car parks and to the exit(s) should be free of sharp turns. If

there are sharp turns or pillars obstructing sight lines, this could be modified by

using mirrors or other methods.

otential entrapment areas such as storage rooms along the route should be kept

locked.

A endan boo h should be loca ed near en rances and predic able rou es

EXAMP ES OF CPTED STRATEGIES APP ICAB E TO

PUB IC SPACES

Appendix C

Crime revention Through Environmental Design Guidebook 47

APPENDIX C: EXAMP ES OF CPTED STRATEGIES APP ICAB E TO PUB IC SPACES

Sight lines to the surface lots should be cleared of dense bush, solid fences, or

advertisements that block the view.

Sight lines should be maximised especially from the entrance to a lot and from the parking

attendant’s booth, if there is one.

For road side parking in front of stores, low (not more than 1 metre in height) wrought iron

fencing or low-growth, low maintenance bushes are preferable to other barriers. Gaps

that could be used as hiding spots should be avoided.

2. IGHTING

Car parks should be lit to the minimum standard of being able to identify a face from a

distance of about 10 metres for a person with normal vision.

Lighting should be consistent and located where it can provide maximum visibility.

Light fixtures should be protected against breakage by, for example, the use of wired

glass or other vandal proof materials.

The colour of the walls should allow the lighting to be used efficiently, i.e. painted white

or other light colours.

Lighting at surface car parks should be adequate and uniformly distributed to avoid

deep shadows. This could be achieved by providing more fixtures with lower wattage

rather than fewer with higher wattage.

3. NATURA SURVEI ANCE

Street level pedestrian activities should be incorporated at the ground level of multi-

storey car parks.

Car park design should incorporate permitted kiosks for car accessories and car cleaning

kiosks etc.

Car park design should be open (railings instead of walls) to allow for natural surveillance

from adjacent streets and nearby buildings.

For surface parking, windows and openings can be placed in adjacent buildings to

overlook the lots.

48 Crime revention Through Environmental Design Guidebook

APPENDIX C: EXAMP ES OF CPTED STRATEGIES APP ICAB E TO PUB IC SPACES

Surface parking lots should be located where it can be viewed by shops and residents.

Landscaping foliage should be maintained.

4. ATTENDANTS

Attendant booths should be located near entrances and predictable routes where there

are clear sight lines.

Information and signs should provide guidance on how maintenance problems can be

reported to attendants.

There should be attendants at all times who is trained to respond to emergencies in

multi-storey car parks that operate into the late hours.

If there is no attendant, there should be several well-lit, clearly marked entrances/ exits,

in order to avoid the car park lot becoming an entrapment area.

5. DESIGNATED PARKING OTS

Designated lots for people with disabilities should be provided near an attendant if there

is one, or otherwise near a safe accessible exit or near areas of natural surveillance.

6. FORMA SURVEI ANCE

In larger car parks there should be emergency telephones on each level with illuminated

telephone signs.

Additional surveillance measures such as well signed audio links or video cameras should

be provided in stairwells, lifts and other isolated areas.

atrols by security/ maintenance staff should be encouraged.

The repair of broken bulbs and other common maintenance problems should be promptly

undertaken by the maintenance staff, who should be trained to respond to or report

emergencies.

7. SIGNS AND INFORMATION

Exits and main routes should be clearly signed using distinctive colours and symbols so

that users can easily find their cars.

Crime revention Through Environmental Design Guidebook 49

APPENDIX C: EXAMP ES OF CPTED STRATEGIES APP ICAB E TO PUB IC SPACES

Relevant telephone numbers should be displayed prominently so that users can be

guided to report security problems.

Location identification signs should be provided.

Emergency telephones, if provided, should be signed with raised illuminated telephone

sign.

8. BICYC E PARKING

Bicycle parking facilities should be provided close to buildings.

In isolated areas such as parks, bicycle parking may be located adjacent to activity areas.

Secure bicycle racks should be provided.

9. TRAFFIC CA MING DEVICES

Traffic calming devices such as speed humps should be installed. Landscaping, providing

it does not obstruct lines of sight, is a useful psychological influence to slow drivers down.

PARKS/ OPEN SPACES/ P AYGROUNDS

Parks and open spaces can be planned and programmed for a range of ac ivi ies

1. NATURA SURVEI ANCE AND SIGHT INES

Small parks or play areas should be clearly visible from adjacent streets.

50 Crime revention Through Environmental Design Guidebook

APPENDIX C: EXAMP ES OF CPTED STRATEGIES APP ICAB E TO PUB IC SPACES

Small parks or the edges of larger parks should preferably be overlooked by housing or

commercial developments.

Where practical, walkways should have clear sight lines, especially where they curve or

change grade.

2. ENTRAPMENT AREAS

Entrapment areas close to pathways through park design should be avoided.

athways may have a border of low-lying vegetation or high-branching vegetation, as

opposed to other types of trees and bushes that can easily create entrapment areas

and reduced sight lines.

Multiple entry and exit points should be provided in parks or playgrounds.

3. C USTERING AND PROGRAMMING FOR A RANGE OF ACTIVITIES

To increase use and natural surveillance, activity areas may be clustered or programmed

for a range of activities. Some examples of leisure activities include community services,

cafes, snack bars, community gardens, gardening centres, childcare, adult and senior

health programs and travelling libraries.

arks and open spaces should be planned and programmed for a range of activities,

even if they are intended for passive use.

Space for street activities and supervised washrooms are some of the amenities that the

public might appreciate.

4. OCATION OF ACTIVITY GENERATORS

ark design should allow for the incorporation of activity generators such as food kiosks,

information centres or special events.

Activity generators facing the park such as outdoor cafes and restaurants should be

encouraged to attract users.

Activities should be located either along the edge of parks close to vehicular traffic or

gathered together along pedestrian walkways.

Crime revention Through Environmental Design Guidebook 51

APPENDIX C: EXAMP ES OF CPTED STRATEGIES APP ICAB E TO PUB IC SPACES

To avoid isolation, some benches, fitness trails, tennis or basketball courts and bicycle

paths in parks could be located adjacent to the perimeter of parks or along through-

roads or combining them with the most used pedestrian paths.

For trails leading to dense vegetation, adequate warning signs should indicate that these

trails lead users into isolated areas and suggest alternate routes.

Washrooms should be near children’s playgrounds.

Food kiosks may be located near playgrounds where they are visible.

5. NIGHT TIME USE

The planning and design of the parks should take into account the possibility of night

time use such as night tennis or evening walks. Such areas of the parks must be highly

visible, properly lit and away from entrapment areas.

6. SIGNS AND INFORMATION

Signs should clearly indicate, using words, symbols and maps, the location of telephones,

washrooms, isolated trails, less isolated alternative routes and any places where people

are likely to be at most times while the park is open e.g., tennis courts.

Signs should be located at decision points, such as the intersection of two major paths or

the entrance to the park.

Signs should indicate where and how help can be found and where maintenance

problems and cases of vandalism can be reported.

The hours of operation should also be posted. arks and open spaces should be signed

for emergency telephone or panic alarm.

7. IGHTING

Lighting along paths and areas intended for night use should be provided at the same

level as streets.

A clear demarcation in terms of lighting levels should be introduced to differentiate

areas that are not likely to be used at night from areas where there is likely to have

activities.

52 Crime revention Through Environmental Design Guidebook

APPENDIX C: EXAMP ES OF CPTED STRATEGIES APP ICAB E TO PUB IC SPACES

Landscaping elements should be chosen and maintained so that they do not block

light.

If the parks and open spaces are intended for night use, the paths and potential

entrapment areas should be lit at pedestrian scale to street lighting level.

8. FORMA SURVEI ANCE

In large parks, formal surveillance should be considered either by police, park attendants

or community organised patrols.

Conducting safety audits should help identify safety and security concerns.

ark attendants or organised patrols should know how to respond to emergencies.

9. OPTIMISATION AND INKAGES

arks and open spaces should be improved to provide access to and from populated

areas in order to increase the use of the park system.

arks and open spaces should complement and be integrated with the sidewalk system

to develop an open space and pedestrian network that attract more people.

10. MAINTENANCE

arks and open spaces should be well maintained. Removing litter and graffiti, and

replacing vandalised or burned out bulbs should be a priority.

Crime revention Through Environmental Design Guidebook 53

APPENDIX C: EXAMP ES OF CPTED STRATEGIES APP ICAB E TO PUB IC SPACES

BACK ANES

Back lanes should be well-main ained and free of inappropria e ou door s orage

1. IGHTING

Back lane lighting should be provided.

2. AVOIDING ENTRAPMENT

Back lanes with dead ends should be avoided.

Dead end spaces should be blocked off with fences or gates.

3. ACCESS TO BACK ANES

Back lanes should be closed to vehicular traffic as much as possible.

Removable gates or bollards should be placed at the entrances to prevent access of

vehicles. If access to vehicles is required, one way traffic can be considered.

4. MAINTENANCE

Maintenance of back lanes should be carried out regularly.

Inappropriate outdoor storage should be discouraged.

54 Crime revention Through Environmental Design Guidebook

APPENDIX C: EXAMP ES OF CPTED STRATEGIES APP ICAB E TO PUB IC SPACES

PUB IC WASHROOMS

Approach o washroom en rances should be highly visible

1. SIGHT INES/ OCATION

Approaches to washroom entrances should be highly visible. Deep, contorted and

recessed corridors leading to such facilities should be avoided.

2. ENTRANCES

For office and commercial buildings, maze entrances should be provided. Avoid placing

public telephones near the entrance as potential offenders may monitor the movement

in and out of the washroom from the public telephone.

Entrances to washrooms near playgrounds should be visible from the playgrounds as far

as possible.

If there is more than one washroom, they should be located close to one another with

clear sight lines.

3. MAINTENANCE

Vandalism and graffiti should be promptly cleaned.

The quality of finish and maintenance are important to a pleasant and safe washroom.

Crime revention Through Environmental Design Guidebook 55

APPENDIX C: EXAMP ES OF CPTED STRATEGIES APP ICAB E TO PUB IC SPACES

4. SIGNS

Washrooms should have signs alerting users to the location of emergency assistance

and providing telephone numbers to report vandalism or maintenance problems.

5. ATTENDANTS

Attendants may be practical and required for washrooms which are located in remote

areas.

6. OCKS

Doors should not be lockable without a custodian’s key in order to reduce the danger of

entrapment.

SIDEWA KS/ WA KWAYS

Walkways should be clean and well main ained

1. SIGHT INES AND POTENTIA ENTRAPMENT AREAS

Walkways should be designed to allow good visibility around sharp corners. Inset areas

along buildings or walls, tall fences, earth berms of overgrown vegetation may restrict

visibility and offer potential for entrapment and should be avoided as much as possible.

2. MAINTENANCE AND C EAN INESS

Walkways should be regularly maintained and cleaned.

56 Crime revention Through Environmental Design Guidebook

APPENDIX C: EXAMP ES OF CPTED STRATEGIES APP ICAB E TO PUB IC SPACES

3. IGHTING

Where regular street lighting is not illuminating the walkways, lighting at pedestrian scale

should be provided for the well travelled walkways.

Lighting should be at consistent levels, vandal resistant and at appropriate height.

Lighting intensity should allow a pedestrian to be able to identify a person about 10

metres away.

4. FORMA SURVEI ANCE THROUGH PATRO S

Natural surveillance should be encouraged by creating opportunities for pedestrian

activities.

Walkways in large isolated park areas may have formal surveillance by police or park

patrol.

UNDERPASSES/ PEDESTRIAN OVERHEAD BRIDGES

Pedes rian underpasses can be designed wi h good visibili y and clear sigh lines

1. NECESSITY FOR GRADE SEPARATION

If the above or below ground pedestrian walkways has to be located in an isolated

area with low pedestrian volume, signs should be provided at strategic locations to

indicate where it leads to and if any alternate route is available.

Crime revention Through Environmental Design Guidebook 57

APPENDIX C: EXAMP ES OF CPTED STRATEGIES APP ICAB E TO PUB IC SPACES

2. AVOIDANCE OF HIDDEN SPACES

edestrian walkways should as much as possible, allow for high visibility by incorporating

clear sight lines.

Any recessed surfaces or possible areas for hiding should be avoided.

If it is necessary for pedestrian walkways to take a sharp turn of more than 60 degrees,

an angled full-length mirror should be placed so that pedestrians can see around the

corner.

3. SIGN AND INFORMATION

Signs should display information such as the pedestrian walkways, hours of operation,

alternate routes, location of telephones and panic hardwares.

4. ACTIVITY GENERATORS

If underpasses are long and well used, supporting activity generators should be

encouraged such as a small confectionery or coffee shop/ kiosk.

Activity generators should be encouraged at route intersections to create higher

visibility.

5. MAINTENANCE AND C EAN INESS

Underpasses should be maintained and cleaned as regularly as possible.

6. VISIBI ITY OF BE OW GRADE PEDESTRIAN WAY TRAFFIC

Access to the underpasses should be highly visible from the streets, adjacent uses,

frequent pedestrian traffic areas and activity generators.

7. IGHTING

The underpasses should be lit by natural or artificial sources to be able to identify a face

from a distance of about 10 metres. Lighting sources should be protected from vandalism

or manipulation.

Lighting should be regularly maintained.

58 Crime revention Through Environmental Design Guidebook

APPENDIX C: EXAMP ES OF CPTED STRATEGIES APP ICAB E TO PUB IC SPACES

8. FORMA SURVEI ANCE

If the underpasses are more than 35 metres long, mechanical surveillance of the

underpass or alternatively an alarm device or emergency telephone should be made

available.

BUS SHE TERS/ TAXI STANDS/ MRT/ RT STATIONS

Ma erials and cons ruc ion de ails for bus shel ers should be vandal resis an

1. SIGHT INES

Commuters at bus shelters, taxi stands and entrances to MRT/ LRT stations should be

clearly visible from streets and buildings as far as possible.

Any walls, berms, bushes, power boxes or solid fences that block the view should be

eliminated or modified.

Advertisement on bus shelters should be located to ensure visibility of commuters.

2. AVOIDANCE OF ENTRAPMENT AREAS

Nearby entrapment areas created by landscaping or built form should be eliminated or

modified.

3. SIGNS AND INFORMATION

assenger information signs should indicate route schedules.

Crime revention Through Environmental Design Guidebook 59

APPENDIX C: EXAMP ES OF CPTED STRATEGIES APP ICAB E TO PUB IC SPACES

4. REDUCE ISO ATION

Bus shelters or taxi stands near to an isolated area such as a large parking lots, vacant

land and, alleys or buildings set far back from the street should be avoided if possible.

5. BUS SHE TER AND TAXI STAND DESIGN

Bus shelters and taxi stands should be designed to ensure that there is no hiding space in

or around the shelter.

Sitting rails instead of benches should be provided so as to prevent people from sleeping

in bus shelters or taxi stands.

The materials and construction details for the shelter should be vandal resistant.

6. IGHTING

The areas adjacent to bus shelters or taxi stands should be well lit.

7. MAINTENANCE

Bus shelters and taxi stands should be well maintained as far as possible.

The shelters should be identified by number and preferably a telephone number posted

to report maintenance problems.

8. FORMA SURVEI ANCE

Measures should be taken to improve drivers ability to respond to dangerous situations,

e.g. through two way communications or a panic alert button.

Drivers should be trained to respond to emergencies.

All MRT/ LRT stations should have video and/ or other formal surveillance.

9. PATRO S

olice should be made aware of problematic MRT/ LRT stations, bus shelters or taxi stands.

60 Crime revention Through Environmental Design Guidebook

Crime revention Through Environmental Design Guidebook 61

REFERENCES

City of Edmonton lanning and Development (1995) Design Guide for a Safer City, Edmonton

City of Tucson, Development Standard No. 2-14.0, Crime revention Through Environmental Design

City of Virginia Beach C TED Committee (2000) C TED - General Guidelines for Designing Safer Communities. Virginia Beach, Virginia

C TED: Durham Guide to Creating a Safer Community. Durham County, North Carolina.

Crowe, T. (2000) Crime revention Through Environmental Design. Butterworth-Heinemann, Stoneham, Massachusetts

Crowe, T. (2003) Advanced Crime revention Through Environmental Design (Seminar notes). American Crime revention Institute, Louisville, Kentucky

Geason, S. and Wilson, .R. (1989) Designing Out Crime. Australian Institute of Criminology, Canberra

Government of South Australia (2002) Crime revention Through Environmental Design and Urban Design. Adelaide, Australia

Lismore City Council (2000) Development Control lan No. 43 - C TED. Lismore, Australia.

National Crime revention Council (U.S.) (1997) Designing Safer Communities - a C TED Handbook. NC C (U.S.), Washington D.C.

Office of lanning, Baltimore County (2000) Comprehensive Manual of Development olicies, Division VI, Section H (C TED). Baltimore County, Maryland

laster, S. and Carter, S. (1993) lanning for revention: Saratosa, Florida’s Approach to C TED. Florida Criminal justice Executive institute, Tallahassee, Florida.

Smith, M. S. (1996) Crime revention Through Environmental Design in arking Facilities. National Institute of Justice, Washington D.C.

Tempe City Council (1997) C TED Guidelines. Tempe, Arizona

Wekerle, G. R. et el (1992) A Working Guide for lanning and Designing Safer Urban Environments. lanning and Development Department, Toronto.

The materials in this Crime revention Through Environment Design Guidebook may not be reproduced in whole

or part without the written consent of the National Crime revention Council. hotographs taken by SSSgt Steven

Cheong Kong Meng remain property of the Singapore olice Force and National Crime revention Council.

Crime revention Through Environmental Design Guidebook 61

62 Crime revention Through Environmental Design Guidebook

CREDITS

CPTED PROJECT COMMITTEE

Mr Chong Lit Cheong (Chairman) Chief Execu ive Officer JTC Corpora ion

Mr Benedict Tan (Deputy Chairman) Depu y Chief Execu ive Officer Building and Cons ruc ion Au hori y

Dr John Keung DCEO Housing and Developmen Board

Mrs Lee Wai Chin DCEO Na ional Parks Board

Mr Ong Geok Soo ACEO JTC Corpora ion

Mr Tan Bing Chui Member Na ional Crime Preven ion Council

rofessor Cheong Hin Fatt Dean of School of Design & Environmen Na ional Universi y of Singapore

Mr Lim Tow Fok General Manager, Keppel Land Real Es a e Developers’ Associa ion of Singapore

Mr Eugene Yong Kon Yoon Presiden Singapore Con rac ors Associa ion Limi ed

Mr John Ting Presiden Singapore Ins i u e of Archi ec s

Er Dr Lock Kai Sang Presiden Ins i u ion of Engineers Singapore

Mr Ng Lip Joon Hon. Secretary Singapore Ins i u e of Landscape Archi ec s

Mr Francisco John Celio Direc or, Securi y Consul ancy Depar men Commercial & Indus rial Securi y Corpora ion

ADVISOR

Mr Timothy D Crowe Criminologis

CPTED GUIDEBOOK WORKGROUP

Mr Lim Tow Fok General Manager, Keppel Land Real Es a e Developers’ Associa ion of Singapore

Mr John Ting Presiden Singapore Ins i u e of Archi ec s

Associate rofessor Teh Kem Jin Depar men of Archi ec ure, School of Design & Environmen Na ional Universi y of Singapore

Mr Cheong Kin Man

Housing and Developmen Board

Mr Cheang Tick Kei JTC Corpora ion

Mr Chin Jen Chyi

Building and Cons ruc ion Au hori y

SECRETARIAT

Mr Chin Jen Chyi Building and Cons ruc ion Au hori y

Mr Lim Cheng Yong Building and Cons ruc ion Au hori y

Mr Ng Man Hon Building and Cons ruc ion Au hori y

62 Crime revention Through Environmental Design Guidebook

Crime revention Through Environmental Design Guidebook 63

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64 Crime revention Through Environmental Design Guidebook