Transportation Engineering Assignment

CEE 372 INTRODUCTION TO TRANSPORTATION ENGINEERING

Spring 2017 Ninth Assignment: Signal and Multi-way Warrant Study DUE: 17 April It is your responsibility to determine if the intersection of Mike Mulligan Avenue and Mary Anne Road should be signalized or if it should have four-way stop control. Both streets are minor collectors. Mike Mulligan Avenue has one through-and-right-turn-lane-per-direction and one left-turn-lane-per- direction in both directions, and is uncontrolled. Mary Anne Road has one through-and-right-turn- lane-per-direction and one left turn lane in both directions, with stop signs in both directions. Only consider Traffic Signal Warrants 1, 2, and 3; and Multi-Way Stop Warrants A, C, and D. Mary Anne Road is the east-west street, has a posted speed limit of 30 miles-per-hour, and stop signs. Mike Mulligan Avenue is the north-south street, has a posted speed limit of 35 miles-per-hour and 85th-percentile speed of 38 miles-per-hour. There are no traffic signals within two miles in any direction. The eastbound mean delay was measured as 56 seconds from 7:00 to 8:00 AM, and 63 seconds from 3:00 to 4:00 PM. The left-turning traffic, for both northbound and southbound, from Mike Mulligan Avenue is estimated at 20%. The eastbound left-turning traffic from Mary Anne Road is estimated at 45% of the total approach traffic. The westbound left-turning traffic from Mary Anne Road is also estimated at 45% of the total approach traffic. The hourly traffic volume for the entire day was obtained on 16 February 2017 and is provided below.

STREET TRAFFIC VOLUMES TIME NB SB EB WB

1:00 AM 17 22 6 0 2:00 AM 33 70 4 1 3:00 AM 82 120 2 0 4:00 AM 54 51 2 2 5:00 AM 110 50 6 8 6:00 AM 193 130 14 28 7:00 AM 269 190 53 73 8:00 AM 439 484 221 144 9:00 AM 291 278 183 112

10:00 AM 159 216 154 91 11:00 AM 139 172 168 86 12:00 PM 157 131 163 83 1:00 PM 194 265 96 61 2:00 PM 178 199 111 93 3:00 PM 266 242 142 190 4:00 PM 258 324 119 172 5:00 PM 170 289 84 174 6:00 PM 174 217 65 101 7:00 PM 146 127 54 152 8:00 PM 130 75 28 116 9:00 PM 107 56 25 59

10:00 PM 88 33 17 13 11:00 PM 34 17 13 9 12:00 AM 26 5 6 4

TOTAL 3,714 3,763 1,736 1,772