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Transportation
The National Academies promote innovation and progress in transportation through research. They address all modes and aspects of transportation such as public transportation, freight systems, rail, aviation, and marine transportation. The Academies also provide expert advice and guidance on transportation policy and programs by analyzing national transportation issues and policy.
Recent Releases
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NCHRP Synthesis 344: Winter Highway Operations
TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 344: Winter Highway Operations examines changes that occurred between 1994 and 2004 to practices and strategies used to control the impacts of winter weather on the safe and efficient movement of traffic. ...
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NCHRP Synthesis 411: Microsurfacing
TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 411: Microsurfacing explores highway microsurfacing project selection, design, contracting, equipment, construction, and performance measurement processes used by transportation agencies in the United States and Canada.
Microsurfacing is a polymer-modified cold-mix surface ...
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CTBSSP Synthesis 22: Safety Management in Small Motor Carriers
TRB's Commercial Truck and Bus Safety Synthesis Program (CTBSSP) Synthesis 22: Safety Management in Small Motor Carriers explores small motor carriers' strengths and weaknesses in safety management, and identifies potentially effective safety practices. ...
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NCHRP Report 528: Thermally Sprayed Metal Coatings to Protect Steel Pilings: Final Report and Guide
TRB's National Cooperative Highway Research Program (NCHRP) Report 528: Thermally Sprayed Metal Coatings to Protect Steel Pilings: Final Report and Guide investigtes thermally sprayed metal coatings (TSMCs) and offers a guide for the application of TSMCs to protect steel pilings ...
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NCHRP Report 606: Forecasting Statewide Freight Toolkit
TRB's National Cooperative Highway Research Program (NCHRP) Report 606: Forecasting Statewide Freight Toolkit explores an analytical framework for forecasting freight movements at the state level. ...
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TCRP Research Results Digest 98: Synthesis of Information Related to Transit Problems: 2011
TRB's Transit Cooperative Research Program (TCRP) Research Results Digest 98: Synthesis of Information Related to Transit Problems is a digest of the progress and status of TCRP Project J-7, "Synthesis of Information Related to Transit Problems," for which the Transportation ...
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NCHRP Synthesis 381: Falling Weight Deflectometer Usage
TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 381: Falling Weight Deflectometer Usage examines usage by state departments of transport of the falling weight deflectometer (FWD) to measure pavement deflections in response to a stationary dynamic load, similar to a ...
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NCFRP Report 3: Separation of Vehicles--CMV-Only Lanes
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 Vehicles—CMV-Only Lanes. The report examines major issues and concepts that should be understood in developing new ...
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ACRP Report 26: Guidebook for Conducting Airport User Surveys
TRB's Airport Cooperative Research Program (ACRP) Report 26: Guidebook for Conducting Airport User Surveys explores the basic concepts of survey sampling and the steps involved in planning and implementing a survey. The guidebook also examines the different types of airport ...
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NCHRP Report 625: Procedures Guide for Right-of-Way Cost Estimation and Cost Management
TRB's National Cooperative Highway Research Program (NCHRP) Report 625: Procedures Guide for Right-of-Way Cost Estimation and Cost Management explores approaches for developing right-of-way (ROW) cost estimates. The report also examines ways to track and manage ROW cost during all phases ...
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