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.

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 Transit Cooperative Research Program (TCRP) Synthesis 98: Ridesharing as a Complement to Transit explores current practices in using ridesharing to complement public transit and highlights ways to potentially enhance ridesharing and public transit.

TRB’s Airport Cooperative Research Program (ACRP) Report 61: Elimination or Reduction of Baggage Recheck for Arriving International Passengers identifies potential alternative procedures that might be implemented to help reduce or eliminate the need for the recheck of baggage for arriving international passengers at U.S. airports. The report describes the potential benefits and costs to airport...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2261 consists of 21 papers that explore the economic impacts of high-speed rail and intercity passenger rail service, safe high-speed rail operation, fire development and spread in passenger rail vehicles, geometry of high-speed turnouts, and international variation in cost–benefit analysis of urban rail pro...

TRB’s Airport Cooperative Research Program (ACRP) Report 37A: Guidebook for Measuring Performance of Automated People Mover Systems at Airports is designed to help measure the performance of automated people mover (APM) systems at airports. The guidebook identifies, defines, and demonstrates application of a broad range of performance measures encompassing service availability, safety, operatio...

TRB’s Transit Cooperative Research Program (TCRP) Report 152: Guidelines for Ferry Transportation Services examines the history and characteristics of ferry systems throughout North America and offers guidelines for planning, marketing, operating, and managing a ferry system as a component of an overall transportation network. The report also explores the potential benefits of and impediments t...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2216 consists of 19 papers that explore transit bus emissions, determinants of delay incident occurrence, data for national transit database section 15 reporting, regularity of service, passenger flow patterns, impacts of holding control strategies, and transit performance. This issue of the TRR also examine...

TRB’s Commercial Truck and Bus Safety Synthesis Program (CTBSSP) Research Results Digest 9: A Status Report describes the progress and status of the Commercial Truck and Bus Safety Synthesis Program (CTBSSP). CTBSSP is a cooperative research program sponsored by the Federal Motor Carrier Safety Administration (FMCSA) and administered by the Transportation Research Board. The program was authori...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2217 consists of 20 papers that explore travel behavior and demand potential of tram- and bus-based neighborhoods, impact of gasoline prices on transit ridership, cost-effective approaches to reduce greenhouse gas emissions through public transportation, predicting the mean and variance of transit segment an...

TRB’s Transit Cooperative Research Program (TCRP) Synthesis 93: Practices to Protect Bus Operators from Passenger Assault highlights practices and policies implemented by transit agencies to deter and mitigate assaults on bus operators.

TRB’s Transit Cooperative Research Program (TCRP) Synthesis 94: Innovative Rural Transit Services highlights transit and rural intercity bus service responses to changing rural community transportation needs. The report includes an emphasis on the innovative and/or entrepreneurial spirit, the innovator, and the conditions required for innovation.

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2218 consists of ten papers that explore yield-to-bus electronic warning signs on transit buses; reserved bus lanes; life-cycle cost tool for transit buses; innovative operating solutions for bus rapid transit; converting a two-way left-turn lane into a bus rapid transit lane; and joint optimization of bus s...

TRB’s Transportation Research Record, Journal of the Transportation Research Board, No. 2219 includes 12 papers that explore driver comprehension and assessment of traffic control devices, managing trams and traffic at intersections with hook turns, analysis and mitigation of safety issues at curbside tram stops, light rail systems free of overhead wires, context-sensitive design concepts for s...

The July-August 2011 TR News assembles feature articles exploring the state of security and critical infrastructure protection, including an assessment of U.S. infrastructure resiliency, North American perimeter security and the movement of trade, the security of bridges and tunnels, measures to protect rail and transit from attacks, the effects of piracy on the global supply chain, a...

TRB’s Transit Cooperative Research Program (TCRP) Synthesis 90: Video Surveillance Uses by Rail Transit Agencies explores the current use of electronic video surveillance technology solely by passenger rail agencies onboard railcars, along rights-of-way, and more.

The TRB Standing Committee on Intercity Passenger Rail has released the latest issue of its Intercity Rail Passenger Systems Update. The online newsletter is published intermittently and is designed to disseminate information about current research and developments in intercity rail passenger systems. Articles in this issue highlight a discussion with the new U.S. House of Representatives Railr...

TRB Special Report 304: How We Travel: A Sustainable National Program for Travel Data assesses the current state of travel data at the federal, state, and local levels and defines an achievable and sustainable travel data system that could support public and private transportation decision making. The committee that developed the report recommends the organization of a National Travel Data Prog...

TRB’s Transit Cooperative Research Program (TCRP) Synthesis 88: Strollers, Carts, and Other Large Items on Buses and Trains documents the state of the practice of transit agencies managing capacity on vehicles carrying customers with large items. The synthesis also includes a discussion of vehicle designs to accommodate these various large items.

TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 99: Improving Mobility for Veterans mobility explores issues facing our veterans and illustrates some potential strategies for community transportation providers who are interested in enhancing mobility options for our veterans.

TRB’s Commercial Truck and Bus Safety Synthesis Program (CTBSSP) Research Results Digest 8: A Status Report describes the progress and status of the Commercial Truck and Bus Safety Synthesis Program (CTBSSP). CTBSSP is a cooperative research program sponsored by the Federal Motor Carrier Safety Administration (FMCSA) and administered by the Transportation Research Board. The program was authori...

TRB’s Airport Cooperative Research Program (ACRP) Report 41: Guide to the Decision-Making Tool for Evaluating Passenger Self-Tagging provides the information and tools, included on and accompanying CD-ROM, necessary for an airport or airline to determine the appropriateness of pursuing passenger self-tagging should it be allowed in the United States in the future. The tools, in an Excel Spreads...

TRB’s Airport Cooperative Research Program (ACRP) Web-Only Document 10 is Appendix A: Research Documentation to ACRP Report 41 : Guide to the Decision-Making Tool for Evaluating Passenger Self-Tagging, which provides the information and tools, included on an accompanying CD-ROM, necessary for an airport or airline to determine the appropriateness of pursuing passenger self-tagging should it be ...

TRB has released the latest issue of the Intercity Rail Passenger Systems Update. The online newsletter is published intermittently and is designed to disseminate information about current research and developments in intercity rail passenger systems. Articles in this issue explore high-speed train developments in the United States, the legislative prospects for Amtrak, New York's high-speed ra...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2146 includes 16 papers that explore an innovative transport solution for suburban areas, how to expand subway and urban railway networks, track geometry for light rail systems, vehicle and pedestrian safety at light rail stops, a solution to rail overcrowding, and improving metro networks. This issue of the...

TRB’s Airport Cooperative Research Program (ACRP) Report 37: Guidebook for Planning and Implementing Automated People Mover Systems at Airports includes guidance for planning and developing automated people mover (APM) systems at airports. The guidance in the report encompasses the planning and decision-making process, alternative system infrastructure and technologies, evaluation techniques an...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2159 includes 14 papers that explore high-speed rail projects, emissions and energy consumption of high-speed trains, passenger rail crew scheduling, railway infrastructure charging, appraisal of rail freight projects, risk analysis of transporting hazardous materials by rail, and optimizing train network ro...

A featured article in the July-August 2010 TR News includes a 21-question, true-or-false and multiple choice quiz that gauges knowledge of basic information, general and specific, related to globalization and transportation. The enlightening answers to the quiz are accompanied by citations of readily available resources for additional information and reference.

TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 96: Managing Increasing Ridership Demand documents a 2009 study mission to Guayaquil, Ecuador; Santiago, Chile; Buenos Aires, Argentina; and Porto Alegre, Brazil, that investigated how transit operators and agencies in these cities accommodated sudden and significant growth in the number of riders and increasing dema...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2145 contains 13 papers that explore a direct ridership model of bus rapid transit; bus network planning for transfers; citywide bus network restructuring; developing a bus rapid transit strategic plan; select bus service on Bx12 in New York, New York; a coordinated and conditional bus priority approach; and...