Urban economics for traffic congestion

I need a research paper with this topic: Urban economics for traffic congestion. Here are the requirements:

single-space maximum 4 pages.

Introduction/background section

 Main content/body section 

 Conclusions/Findings/Discussion section 

References: Minimum of 5 trustworthy (i.e. not Wikipedia, not random internet sites, and not class lecture material, etc.) articles/reports (preferably peer reviewed journal articles and/or State or U.S. DOT reports)