The Institute of Medicine has released a report that is part of a series of publications that provide information and analysis to policy makers and others working to turn the obesity epidemic around. The report explores prior obesity prevention strategies and focuses on five critical goals for preventing obesity: integrating physical activity into people's daily lives, making healthy food and b...

TRB’s Airport Cooperative Research Program (ACRP) Legal Research Record 14: Achieving Airport-Compatible Land Uses and Minimizing Hazardous Obstructions in Navigable Airspace discusses airport-compatible land-use requirements, the legal issues related to achieving airport compatible land use, and legal issues particular to eliminating hazardous obstructions to airspace. The report also includes...

TRB’s second Strategic Highway Research Program (SHRP 2) has released a project brief that highlights Transportation Project Impact Case Studies (T-PICS). T-PICS is a web-based tool designed to allow for economic impacts to more easily be considered during community visioning for transportation, or during public and stakeholder involvement for long-range system planning or corridor planning. Vi...

TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 424: Engineering Economic Analysis Practices for Highway Investment explores how U.S. transportation agencies have applied engineering economics--benefit–cost analyses and similar procedures--to decisions on highway investments.

TRB’s National Cooperative Highway Research Program (NCHRP) Report 716: Travel Demand Forecasting: Parameters and Techniques provides guidelines on travel demand forecasting procedures and their application for helping to solve common transportation problems. The report presents a range of approaches that are designed to allow users to determine the level of detail and sophistication in selecti...

TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-C08-RR-1: Linking Community Visioning and Highway Capacity Planning explores community visioning efforts, identifies steps and activities that might be considered when engaging in visioning, and highlights the links between vision outcomes and transportation planning and project development processes. The report also presents a ...

Roundabouts have seen unprecedented growth across the United States, from just a handful a decade ago to more than 2,000 and counting. National guidance had to keep pace with the needs of states and communities planning and implementing roundabouts, and NCHRP took a lead role.

TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 427: Extent of Highway Capacity Manual Use in Planning assesses how state departments of transportation, small and large metropolitan planning organizations, and local governments are using or might use the Highway Capacity Manual for planning analyses, or more specifically, for performance monitoring, problem identification,...

In regions across the nation, bridge engineers know that the next major seismic event is coming—maybe tomorrow, maybe centuries from now. DOTs have the critical charge of designing for earthquakes and protecting the lives of travelers.

TRB’s National Cooperative Highway Research Program (NCHRP) Web-Only Document 184: Going the Distance Together: A Citizen’s Guide to Context Sensitive Solutions for Better Transportation is designed to help people ask the right questions at the right time during the transportation planning process in order to help ensure that transportation projects fit the context of their community. Context s...

TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-S01A-RW-1: Development of Analysis Methods Using Recent Data introduces an approach to microscopic or individual event modeling of crash-related events, where driver actions, initial speeds, and vehicle locations are treated as inputs to a physical model describing vehicle motion. The report also illustrates how a trajectory mod...

TRB’s Transit Cooperative Research Program (TCRP) Report 153: Guidelines for Providing Access to Public Transportation Stations is intended to aid in the planning, developing, and improving of access to high capacity commuter rail, heavy rail, light rail, bus rapid transit, and ferry stations. The report includes guidelines for arranging and integrating various station design elements. The prin...

TRB’s National Cooperative Highway Research Program (NCHRP) Report 710: Practical Approaches for Involving Traditionally Underserved Populations in Transportation Decisionmaking highlights tools, techniques, and approaches for identifying and connecting with populations that have traditionally been underserved and underrepresented in transportation decisionmaking.

TRB’s National Cooperative Freight Research Program (NCFRP) Report 16: Preserving and Protecting Freight Infrastructure and Routes provides guidance to decision makers involved in freight facility operations, freight transportation planning, and land use on how to avoid conflicting land uses or mitigate existing uses. The report provides information about freight transportation and its importan...

TRB’s National Cooperative Freight Research Program (NCFRP) Report 14: Guidebook for Understanding Urban Goods Movement is designed to help facilitate decisions that accommodate and expedite urban goods movement while minimizing the environmental impact and community consequences of goods movement. The guidebook and cases studies are designed to help decision makers better understand the potent...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2263 consists of 20 papers that explore measurement of transportation network vulnerability, individual path marginal cost in networks, dynamic origin–destination matrix estimation on congested networks, centralized time-dependent multiple-carrier collaboration for less-than-truckload carriers, and benchmark...

TRB’s second Strategic Highway Research Program (SHRP 2) has released a Capacity Projects Brief, which summarizes the status of products being produced within the Capacity area of SHRP 2. The objective of Capacity Research in SHRP 2 is to develop tools for systematically integrating environmental, economic, and community requirements into the analysis, planning, and design of new highway c...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2254 consists of 18 papers that explore behavioral foundation of route choice and traffic assignment, the information matrix in mixed logit models estimation, design features of activity-based models, dynamic activity generation models, and the underlying distributional assumption in nested logit models. Thi...

TRB’s National Cooperative Freight Research Program (NCFRP) Web-Only Document 4: Identification and Evaluation of Freight Demand Factors focuses on the identification of independent variables that may be used to explain gross measures of freight demand over time.

TRB’s National Cooperative Highway Research Program (NCHRP) Web-Only Document 183: Guide for Managing NEPA-Related and Other Risks in Project Delivery is a guide on the use of risk management as a means to help support the early identification of key issues during the National Environmental Policy Act (NEPA) process; the effective application of management action and other resources to avoid or...

TRB Transportation Research Record: Journal of the Transportation Research Board, No. 2260 consists of 17 papers that explore travel time variations on urban links, macroscopic fundamental diagrams for freeway networks, traffic flow forecasting and spatial data aggregation, velocity-based first-order continuum traffic model, general newell model and related second-order expressions, and fundame...

TRB Transportation Research Record: Journal of the Transportation Research Board, No. 2257 consists of 14 paper that explore developing capacity models for local roundabouts, speed–flow curves for freeways in Highway Capacity Manual 2010, running time prediction for signalized urban streets, right-turn-on-red volume estimation and incremental capacity for shared lanes at signalized intersection...

TRB Transportation Research Record: Journal of the Transportation Research Board, No. 2245 consists of 17 papers that address improving area wide “bikeability” scoring, building support for new transportation funding and financing, the use of visualization in the public involvement process, innovative traffic demand management strategy, assessing travel demand management, and parking demand and...

The Board on Atmospheric Sciences and Climate, part of the National Academies’ Division on Earth and Life Studies (DELS), has released a report that reviews the draft 10-year strategic plan for the U.S. Global Change Research Program (USGCRP). According to the committee that produced the report, the plan, which shapes and coordinates climate and related global environmental change research effo...

TRB Transportation Research Record: Journal of the Transportation Research Board, No. 2255 consists of 18 papers that explore workplace choices and travel demand, effects of peak load pricing on metropolitan network and activities, population synthesis in activity-based microsimulation models, vehicle type choice and tour length, integration of activity-based and agent-based models, problem of ...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2234 consists of 14 papers that explore improving resilience of critical infrastructure systems, material convergence and its determinants, defending transportation networks against attack, location of medical facilities, and site considerations for points of dispersing after biological terrorist attack. Thi...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2238 consists of 13 papers that explore evaluating transit investments in developing countries; normalized volume measurement for nonmotorized traffic flow; location-based data for estimated traffic on urban arterials; same-day mode choice modeling; application of fuzzy roughness index to roads economic deci...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2243 consists of 18 papers that explore reidentification of trucks over long distances, lane-level travel times, private-sector probe-based speed data in the planning processes, travel time estimation enhancement, sustainable urban transport, university students’ acquisition and use of travel information, in...

TRB’s second Strategic Highway Research Program (SHRP 2) has released a project brief that highlights several projects from the SHRP 2 Capacity and Reliability focus areas that are working to improve existing planning models, operations models, and activity-based models that are often used to help inform decisions about spending public funds on transportation improvements.

TRB’s National Cooperative Highway Research Program (NCHRP) Report 707: Guidelines on the Use of Auxiliary Through Lanes at Signalized Intersections provides guidelines to help in the justification, design, and analysis of auxiliary through lanes (ATLs) at signalized intersections. ATLs are lanes for through movements that begin upstream of a signalized intersection and end downstream of the in...