TRB’s second Strategic Highway Research Program (SHRP 2) Capacity Projet C01 has released a prepublication, non-edited version of a report titled A Framework for Collaborative Decision Making on Additions to Highway Capacity that describes a framework—including for long-range planning, corri
This inaugural report uses 2010 INRIX traffic data to analyze 328 specific (directional) freeway corridors in the U.S. for congestion conditions and reliability. Detailed hour-by-hour data revealed when and how congestion occurs, and allowed the authors to suggest how much extra “buffer” time is
The 2011 Urban Mobility Report is a document prepared by the Texas Transportation Institute studying congestion, both currently and historically, in the United States. Data provided by INRIX, a software firm that studies historical and real-time travel time, coupled with traffic volume data from
The 2012 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 comparisons and a desc
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
Transportation systems management and operations (TSM&O) strategies can improve travel time reliability, which yields both safety and economic benefits and improves road-user experience. To date, only a few transportation agencies have TSM&O programs to address travel time reliability, bu
This report is a guide to state DOT best practice in organizational improvement programs and performance. It provides guidance on determining where and how to start improving organizational effectiveness. Actual state program examples, tips, and data are included among detail on these nine succes
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
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
This guidebook presents a framework and cost-effective methods to estimate, predict, measure, and report travel time, delay, and reliability performance data. This guidebook also presents various data collection methods, analysis approaches, and applications that effectively support transportatio
