TRB's National Cooperative Highway Research Program (NCHRP) Web-Only Document 234: Developing a Method Selection Tool for Travel Forecasting documents research undertaken to provide guidance on travel forecasting methods to agencies with diverse planning needs. This project sought to produce applicable methods by evaluating agencies’ planning programs, desired performance metrics, requirements, and constraints, and this report documents the research and methods behind the final project and software tool....

TRB's National Cooperative Highway Research Program (NCHRP) Research Report 852: Method Selection for Travel Forecasting presents guidelines for travel-forecasting practitioners to assess the suitability and limitations of their travel-forecasting methods and techniques to address specific policy and planning questions. The report also provides practitioners with the ability to scope model development or improvements so as to attain the desired policy sensitivity within constraints such as institutional,...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2641 consists of 19 papers that explore pavements, including: Nondestructive In Situ Characterization of Elastic Moduli of Full-Depth Reclamation Base Mixtures Implementation of the Thin Bonded Concrete Overlay of Existing Asphalt Pavement Design Procedure in the AASHTOWare Pavement ME Design Software Evaluation of Moduli and Structural Coefficients of South Carolina’s Asphalt Base Mixtures Dynamic Backcalculation of ...

TRB has released  Access Management Manual and Applications Guidelines USB Edition  that provides the complete text of both the Access Management Manual, Second Edition (AMM2) and the Access Management Application Guidelines (AMAG). Links between the volumes enable you to directly connect the access management concepts discussed in the AMM2 with the strategies for implementing those concepts provided in the AMAG. The USB also includes the self-calculating spreadsheet tools that demonstrates som...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2627 consists of 11 papers that explore air quality in transportation, including: In-Use Emissions from 2010-Technology Heavy-Duty Trucks: Impact on Air Quality Planning in California Evaluation of Odd–Even Day Traffic Restriction Experiments in Delhi, India Real-World Freeway and Ramp Activity and Emissions for Light-Duty Gasoline Vehicles Heavy-Duty Diesel Truck Emissions Modeling Harnessing the Potential of Automat...

TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 514: Statewide and Megaregional Travel Forecasting Models: Freight and Passenger documents current practices and emerging trends with travel forecasting models. The report explores the motivation for and capabilities of statewide and megaregion models, options for extending them and challenges states face doing so, data requirements, how they are used and integrated with other models, institutional constraints, and emerg...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2661 consists of 14 papers that explore pedestrian issues, including: Comparison of Analytical Methods on Staged Pedestrian Crossings at Crosswalks with a Rectangular Rapid Flashing Beacon Using Embodied Videos of Walking Interviews in Walkability Assessment Comparison of Time-Proximity and Evasive Action Conflict Measures: Case Studies from Five Cities Validation of an Agent-Based Microscopic Pedestrian Simulation Mo...

A featured article in the July-August 2017 issue of the TR News highlights methods that helped influence major changes in the transportation system. This article highlights the history of transportation technologies and programs beginning in the late 1940s and discusses how these early innovations have led to innovative applications in transportation. This article also acknowledges that there is still work to be done to address current transportation challenges and the rate at which changes are adopted. ...

TRB's Special Report 325: Safely Transporting Hazardous Liquids and Gases in a Changing U.S. Energy Landscape reviews how the pipeline, rail, and barge industries have fared in safely transporting the increased volumes of domestically produced energy liquids and gases. The report, sponsored by TRB, reviews the safety record of the three transportation modes in moving these hazardous shipments and discusses key aspects of each mode’s safety assurance system. The report urges the U.S. Department of Transpo...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2620 consists of 9 papers that explore traffic signal systems, including: Derivation of Decision Boundaries for Left-Turn Treatments at Signalized Intersections Use of Microsimulation to Evaluate Signal-Phasing Schemes at Diverging Diamond Interchanges Use of Big Data to Evaluate and Improve Performance of Traffic Signal Systems in Resource-Constrained Countries: Evidence from Cebu City, Philippines Person-Based Optim...