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Research

Analytical Procedures for Determining the Impacts of Reliability Mitigation Strategies

The thrust of the L03 research was the development of methods to predict travel time reliability. The study took a strictly empirical approach to developing these relationships. Two types of models were developed: Predicting Reliability Metrics as a Function of the Mean Travel Time Index and Pred

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Research

Annual Urban Mobility Report

The current edition of Urban Mobility Report builds on previous Urban Mobility Reports with an improved methodology and expanded coverage of the nation’s urban congestion problem and solutions. The links below provide information on long-term congestion trends, the most recent congestion comparis

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Research

Appendix A – Model Estimation Results

Appendix A of the Project C04 Final Report contains the revealed preference data and the experimental data. Appendix A is organized as follows:

A1 Revealed Preference Data – New York Survey And NYBPM Model Level of Service (LOS) And Cost Skims Appendix A2 Revealed Preference Data – Se
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Research

Appendix B – Supporting Technical Memoranda

Appendix B of the Project C04 final report is a collection of technical memoranda. It is organized as follows:

B1 PSRC Traffic Choice Study Data Review And Completed Processing Tasks Appendix B2 Processing Of Traffic Choices GPS Data to Provide Measures of Travel Time Variability for
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Research

Application of AASHTO LRFD Specifications to Design of Sound Barriers

The current design criteria for sound barriers are based on the AASHTO Standard “Guide Specifications for Design of Sound Barriers” dated 1989 and interims through 2002. The content of the AASHTO Guide Specifications for design of sound barriers is not consistent with the requirements of the AASHTO
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Case Studies & Lessons Learned

Arizona Connected Vehicle Work Zone

The Maricopa County Department of Transportation (MCDOT), as part of AZTech and the Federal Highway Administration's (FHWA’s) Every Day Counts initiative, developed a system for deployment of Smarter Work Zone technology at work zone sites. The smart work zone system is designed to be implemented

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Research

ATDM Foundational Research:Analysis, Modeling, and Simulation (AMS) Concept of Operations

As part of the Federal Highway Administration’s (FHWA) Active Transportation and Demand Management (ATDM) Foundational Research, this ATDM Analysis, Modeling and Simulation (AMS) Concept of Operations (CONOPS) provides the description of the ATDM Analysis Modeling and Simulation (AMS) system that

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Research

Attracting, Recruiting, and Retaining Skilled Staff for Transportation System Operations and Management

The NCHRP 693 Report considers the supply and demand of both the current and future TSM&O workforce - the actions transportation agencies may take to attract, recruit, develop, and retain skilled staff with needed capabilities; and the tools that are available or may be developed to assist ag

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Research

Automated Enforcement for Speeding and Red Light Running

This report contains a comprehensive assessment of automated speeding and red light enforcement activity in the United States, and provides guidelines for the start-up and operation of automated enforcement programs to reduce speeding and red light running in an effort to improve highway safety.&

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Best Practice

Best Practices for Crack Treatments for Asphalt Pavements

The objective of this research was to prepare a synthesis of current best practices and programs for crack sealing and crack filling of asphalt pavements.
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