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The Primer describes bottlenecks and explores the opportunity for near-term operational and low-cost construction opportunities to correct them. The Primer is a key resource for the Federal Highway Administration’s (FHWA) Localized Bottleneck Reduction (LBR) Program, providing a virtual forum for peer exchange between members of the transportation community interested in alleviating bottleneck congestion. 
In the January/February 2007 issue of Public Roads magazine, Vassili Alexiadis co-authored a article with James Colyar and John Halkias about a public-private partnership that is working to improve traffic microsimulation technology. The article, titled A Model Endeavor, is available on the Public Roads web site.
Travelers want travel time reliability—a consistency or dependability in travel times, as measured from day to day or across different times of day. Drivers want to know that a trip will take a half-hour today, a half-hour tomorrow, and so on. This brochure addresses questions like Why is travel time reliability important? How do agencies measure travel time reliability? How does an agency begin using travel time reliability measures? and Who is currently using travel time reliability measures?
The final rule on Work Zone Safety and Mobility was published in the Federal Register
(69 FR 54562) on September 9, 2004, with an effective date of October 12, 2007. The purpose of the update is to address the changing times of more traffic, more congestion,
greater safety issues, and more work zones by facilitating comprehensive consideration of
work zone safety and mobility impacts, and the implementation of strategies that help manage
these impacts. Cambridge Systematics has been intimately involved in this project since October
2001, by helping the FHWA in the preparation, publication, and analysis of successive rulemaking notices.
This primer provides an overview of traffic analysis tools in the transportation analysis process. Different categories of traffic analysis tools are defined, and the challenges and limitations of using traffic analysis tools is presented. A specific comparison between Highway Capacity Manual (HCM) analysis and traffic simulation-based analysis is provided. Criteria for selecting the appropriate type of traffic analysis tool are described. This is the first volume in a series of volumes in the Traffic Analysis Toolbox. The other volumes currently in the Traffic Analysis Toolbox are: Volume II: Decision Support Methodology for Selecting Traffic Analysis Tools and Volume III: Guidelines for Applying Traffic Microsimulation Modeling Software.
The purpose of this Decision Support Methodology for Selecting Traffic Analysis Tools is to provide an overview of the role of traffic analysis tools in transportation analyses and to present a detailed methodology for selecting the appropriate tool for the job at hand. The report describes the selection process including selection criteria and worksheets that can be used in applying the selection process.
Guidelines for Applying Traffic Microsimulation Modeling Software provides a recommended process for using traffic simulation software in transportation analyses. The guidelines provide the reader with a seven-step process that begins with project scope and ends with the final project report. It is hoped that these guidelines will assist the transportation community in creating a more consistent process in the use of traffic simulation software.
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Michigan ITS Early Deployment Study (March 2003)
Portalcs™ E-Credentialing Solution (January 2003)
CVIEWcs™ – CVO Data Management Solution (January 2003)
Weather-Responsive Traffic Management (January 2003)
Ohio-Kentucky-Indiana Regional Council of Governments Evaluation of ARTIMIS and ITS Plan (January 2002)
Twin Cities Ramp Meter Evaluation (February 2001)
View our full list of publications
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