TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2625, includes 7 papers that explore information related to connected and automated vehicles, including: Analysis of the Effects of Connected–Automated Vehicle Technologies on Travel Demand Driving Mode Decision Making for Intelligent Vehicles in Stressful Traffic Events Lane-Changing Feedback Control for Ef...

The May-June 2017 edition of the TR News explores the role of transportation in economic development. Articles feature information about benefit-cost analysis, freight production models, transportation satellite accounts, and right sizing strategies. The TR News is TRB's bimonthly magazine featuring timely articles on innovative and state-of-the-art research and practice in all modes of transpo...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2617 consists of 11 papers that explore visibility and work zone traffic control, including: Field Evaluation of Pilot Vehicles and Portable Traffic Control Signals With and Without a Flagger Effects of Full Matrix Color Changeable Message Signs on Legibility and Roadway Hazard Visibility Influence of Truck-...

TRB has released its requirements for submitting papers for presentation at the 2018 TRB Annual Meeting and/or publication in the Transportation Research Record: Journal of the Transportation Research Board . This guide covers the organization and formatting of manuscripts for peer review and for publication, as well as instructions for submission. Papers that do not follow the guidelines will ...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2613 consists of 10 papers that explore traffic and equipment maintenance, especially with regards to weather, including: Use of Calorimetry to Measure Ice-Melting Capacity Investigating Safety Effectiveness of Wyoming Snow Fence Installations Along a Rural Mountainous Freeway Relating Public Opinions of Roa...

TRB's National Cooperative Highway Research Program (NCHRP) latest Ready Results explores the Life-Cycle Cost Estimation Tool (LCCET), a spreadsheet-based tool for comparing the life-cycle costs of alternative designs for new and existing intersections. Designed for flexibility, the tool allows engineers to conduct analyses across different system configurations and consider a wide range of imp...

A featured article in the March-April 2017 issue of the TR News highlights photos from the 96th TRB Annual Meeting, January 8-12, 2017. The article features photographs of sessions, workshops, committee meetings, and awards. Bruce M. Smith, Apperson Crump PLC, and General Counsel, Memphis Area Transit Authority, delivered the delivered the 2017 Thomas B. Deen Distinguished Lecture on “Ethical I...

A featured article in the March-April 2017 issue of the TR News highlights photos from the 96th TRB Annual Meeting, January 8-12, 2017. The article features photographs of sessions, workshops, committee meetings, and awards. Bruce M. Smith, Apperson Crump PLC, and General Counsel, Memphis Area Transit Authority, delivered the delivered the 2017 Thomas B. Deen Distinguished Lecture on “Ethical I...

TRB's National Cooperative Highway Research Program (NCHRP) has released a pre-publication, non-edited version of Research Report 854. The report provides transportation agencies state-of-the-practice information on identifying, classifying, evaluating, and mitigating truck freight bottlenecks using truck probe data rather than traditional travel demand models. The report embraces a broad defin...

TRB's National Cooperative Highway Research Program (NCHRP) Research Report 844: Guide for Integrating Goods and Services Movement by Commercial Vehicles in Smart Growth Environments describes policy, planning, design, and operations practices considering the coexistence of moving goods and services in smart growth environments at both the design and implementation stages as well as retroactive...

TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 507: Traffic Signal Preemption at Intersections Near Highway–Rail Grade Crossings documents the current practices of traffic signal preemption deployed at intersections adjacent to railway grade crossing in both the United States and Canada. The study provides information on practices dealing with traffic signal preemption, m...

TRB's National Cooperative Research Program (NCHRP) Report 841: Development of Crash Modification Factors for Uncontrolled Pedestrian Crossing Treatments quantifies the safety benefits of four types of pedestrian crossing treatments—rectangular rapid flashing beacons, pedestrian hybrid beacons, pedestrian refuge islands, and advanced YIELD or STOP markings and signs—and presents a crash modific...

TRB's National Cooperative Highway Research Program (NCHRP) Web-Only Document 229: Methods and Technologies for Pedestrian and Bicycle Volume Data Collection: Phase 2 explores automated count technologies that capture pedestrian and bicycle volume data. The publication focuses on technologies that came onto the market too late to be included in previous Phase 1 research. Findings from Phase 1 a...

TRB’s Airport Cooperative Research Program (ACRP) Report 50: Improved Models for Risk Assessment of Runway Safety Areas analyzes aircraft veer-offs, the use of declared distances, the implementation of the Engineered Material Arresting System (EMAS), and the incorporation of a risk approach for consideration of obstacles in or in the vicinity of the runway safety area (RSA). An interactive risk...

TRB's National Cooperative Freight Research Program (NCFRP) Research Report 37: Using Commodity Flow Survey Microdata and Other Establishment Data to Estimate the Generation of Freight, Freight Trips, and Service Trips: Guidebook provides policy makers with improved establishment-level models that estimate the Freight Trip Generation (FTG), the number of vehicle trips produced and attracted at ...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2561 consists of 11 papers that explore traffic signal systems, including: Hybrid Multimodal and Intermodal Transport Simulation: Case Study on Large-Scale Evacuation Planning Effects of Autonomous Vehicle Behavior on Arterial and Freeway Networks Generalized Adaptive Smoothing Method for State Estimation of...

A featured article in the November-December 2016 issue of the TR News highlights the challenges of freight transportation with regards to meeting new emissions standards. The TR News is TRB's bimonthly magazine featuring timely articles on innovative and state-of-the-art research and practice in all modes of transportation. It also includes brief news items of interest to the transportation com...

TRB's National Cooperative Highway Research Program (NCHRP) Research Report 834: Crossing Solutions at Roundabouts and Channelized Turn Lanes for Pedestrians with Vision Disabilities: A Guidebook presents guidance on the application of crossing solutions at roundabouts and channelized turn lanes at signalized intersections for pedestrians with vision disabilities. This publication will be of in...

TRB's National Cooperative Highway Research Program (NCHRP) Web-Only Document 222: Guidelines for the Application of Crossing Solutions at Roundabouts and Channelized Turn Lanes for Pedestrians with Vision Disabilities provides guidance to engineers and planners on the design of roundabouts and channelized turn lanes for accessibility. NCHRP Web-Only Document 222 is the final report for NCHRP R...

TRB's E-Circular 218: Advancing Freeway Operations Through Strategic Research captures the state of affairs in freeway operations and reflects on the known universe of tools, techniques, and trends in emerging technologies in freeway management. From predictive software to electronic surveillance systems, operations have advanced rapidly in the past two decades. This publication will aid transp...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2560, consists of 12 papers related to traffic flow theory and characteristics, including: Capacity Drops at Merges: Analytical Expressions for Multilane Freeways Challenges in Applying Calibration Methods to Stochastic Traffic Models Calibration of the Fundamental Diagram Based on Loop and Probe Data Data A...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2559, includes 15 papers that explore information related to intelligent transportation systems, including: National Survey Identifying Gaps in Consumer Knowledge of Advanced Vehicle Safety Systems Capturing the Benefits of a Variable Advisory Speed System in Portland, Oregon: Empirical Before and After Eval...

TRB's National Cooperative Highway Research Program (NCHRP) Web-Only Document 224: Research Supporting the Development of Guidelines for Implementing Managed Lanes documents the contractor's final report used to develop NCHRP Report 835 : Guidelines for Implementing Managed Lanes. The report includes detailed background material, gap analysis, design elements, safety performance parameters, and...

TRB's National Cooperative Highway Research Program (NCHRP) Report 835: Guidelines for Implementing Managed Lanes provides guidance for transportation agencies interested in designing, implementing, operating, and maintaining managed lanes. Guidance includes ways to define initial objectives, outline the necessary decision-making process, and address safety concerns, through the process of deta...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2558 consists of 9 papers that explore traffic signal systems, including: Arterial Progression Optimization Using OD-BAND: Case Study and Extensions Connected Vehicle–Based Adaptive Signal Control and Applications Managing User Delay with a Focus on Pedestrian Operations Automated Turning Movement Counts for...

TRB's E-Circular 215: Roadside Safety Design and Devices: International Workshop summarizes the presentations from a meeting hosted by the International Research Subcommittee of the TRB Roadside Safety Design Committee in Melbourne, Australia, on March 26, 2015. The publication explores assessment practices, work zone safety, safe systems and roadsides, hardware development and testing, and mot...

Now available to order from the TRB Bookstore, the Highway Capacity Manual, Sixth Edition: A Guide for Multimodal Mobility Analysis (HCM) provides methods for quantifying highway capacity. In its current form, it serves as a fundamental reference on concepts, performance measures, and analysis techniques for evaluating the multimodal operation of streets, highways, freeways, and off-street path...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2554 consists of 18 papers that explore highway operations, including: Estimating Drivers’ Willingness to Pay by Using Empirical Data from a Variably Priced Freeway Facility Study to Evaluate Express Toll Lanes on Florida’s Turnpike Microsimulation-Based Real-Time Congestion Pricing Strategy for Managed Lane...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2594 consists of 17 papers that explore the measurement of travel, including: Analysis of the Long-Distance and Overnight Travel Tour Planning Process Matching Household Life-Cycle Characteristics to Clustered Annual Schedules of Long-Distance and Overnight Travel Trip Detection with Smartphone-Assisted Coll...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2556 consists of 9 papers that explore the operational effects of geometrics and access management, including: Roundabouts as a Form of Access Management Statistical Analysis of Effects of Access, Traffic Exposure, and Frontage Parameters on Sale Price of Commercial Real Property in Kansas Site-Specific Safe...