TRB's National Cooperative Highway Research Program (NCHRP) and National Cooperative Freight Research Program (NCFRP) have jointly released NCHRP Report 649/NCFRP Report 3: Separation of Vehiclesâ€"CMV-Only Lanes. The report examines major issues and concepts that should be understood in developing new applications of commercial motor vehicle-only (CMV-only) lanes as a potential method for both easing congestion and reducing the number of traffic accidents on highways.
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 selecting modeling and analysis techniques based on their situations. The report addresses techniques, optional use of default parameters, and includes references to other more sophisticated techniqu
TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 431: Practices to Manage Traffic Sign Retroreflectivity includes examples of practices that illustrate how different types of transportation agencies might meet federal retroreflectivity requirements for traffic signs.
TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 432: Recent Roadway Geometric Design Research for Improved Safety and Operations reviews and summarizes roadway geometric design literature completed and published from 2001 through early 2011, particularly research that identified impacts on safety and operations.
The report is structured to correspond to chapters in the American Association of State Highway and Transportation Officials' A Policy on Geometric Design of Highways and Streets, more commonly referred to as the Green Book.
NCHRP Synthesis 4
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 importance to people's everyday lives; illustrates the types of conflicts between freight and other land uses and their consequences; and provides tools and resources designed to help preserve facilit
TRB's Airport Cooperative Research Program (ACRP) Report 65: Guidebook for Airport Irregular Operations (IROPS) Contingency Planning is designed to help guide commercial passenger service airports of all sizes to develop, continually evaluate, and update their contingency plans for procedures pertaining to irregular operations (IROPS) that may cause significant disruptions to customers.
This guidebook is designed to assist aviation system partners in enhancing their response to customer care during a broad array of IROPS conditions and includes step-by-step templates for the prep
TRB's National Cooperative Highway Research Program (NCHRP) Report 693: Attracting, Recruiting, and Retaining Skilled Staff for Transportation System Operations and Management provides guidance designed to help transportation agencies recruit and retain qualified professional staff in the systems operation and management (SOM) area.
The report explores SOM career paths, skill requirements, and training needs and identifies successful programs, state-of-the-art initiatives, and best industry practices.
A set of tables showing SOM job categories, number of positions, and ed
TRB's second Strategic Highway Research Program (SHRP 2) Report S2-L06-RR-1: Institutional Architectures to Improve Systems Operations and Management examines a large number of topics concerning organizational and institutional approaches that might help transportation agencies enhance highway operations and travel time reliability.
The same project that produced SHRP 2 Report S2-L06-RR-1 also produced SHRP 2 Report S2-L06-RR-2: Guide to Improving Capability for Systems Operations and Management.
TRB's National Cooperative Highway Research Program (NCHRP) Report 694: Evaluation and Performance Measurement of Congestion Pricing Projects is designed to help transportation agencies select or develop measures to evaluate congestion-pricing projects; collect the necessary data; track performance; and communicate the results to decision makers, users, and the general public.
A companion document to NCHRP Report 694 was published as NCHRP Web-Only Document 174: Performance Measurement and Evaluation of Tolling
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 intersection. ATLs are potentially a moderate-cost approach to increase intersection and overall corridor capacity.
A report that describes the research related to the development of