 Maintenance Quality Assurance Field Inspection PracticesFebruary 25, 2015 TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 470: Maintenance Quality Assurance Field Inspection Practices summarizes practices used by state transportation agencies to support maintenance investments. Appendices A and B are only available through the online PDF document.
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 Impacts of Energy Developments on U.S. Roads and BridgesFebruary 7, 2015 TRB’s National Cooperative Highway Research Board (NCHRP) Synthesis 469: Impacts of Energy Developments on U.S. Roads and Bridges documents the economic impact of heavy truck traffic related to energy development on the nation’s roads and bridges.
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 Visualization of Technical Data for Hazard Mitigation and Disaster ResponseJanuary 30, 2015 TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 467: Visualization of Technical Data for Hazard Mitigation and Disaster Response evaluate the tools and techniques used for mitigating geotechnical hazards and responding to geotechnical disasters such as landslides, rockfalls, settlement, sinkholes, and other events.
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 Alliance Contracting—Evolving Alternative Project DeliveryFebruary 13, 2015 TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 466: Alliance Contracting—Evolving Alternative Project Delivery synthesizes current practices related to the use of alliance contracts around the world, and explores the procurement procedures that have been used to successfully implement alliance contracting on typical transportation projects.
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 Permanent Signs Mounted on Median BarriersJuly 24, 2014 TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 465: Permanent Signs Mounted on Median Barriers reports on the current state of practice for mounting permanent highway signs on top of rigid median barriers throughout the United States.
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 Thin Asphalt Concrete OverlaysAugust 3, 2014 TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 464: Thin Asphalt Concrete Overlays documents the current state of the practice as well as research efforts on the use of thin asphalt concrete overlays for pavement maintenance, rehabilitation, and preservation.
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 Pavement Patching PracticesAugust 9, 2014 TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 463: Pavement Patching Practices summarizes current practices for patching small-scale surface defects in concrete and asphalt pavements.
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 Managing Longitudinal Utility Installations on Controlled Access Highway Right-of-Way July 7, 2014 TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 462: Managing Longitudinal Utility Installations on Controlled Access Highway Right-of-Way surveys state departments of transportation (DOTs) to identify and synthesize exemplary practices to help highway officials manage longitudinal utility installations on controlled access highway right-of-ways.
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 Accelerating Implementation of Transportation Research Results October 6, 2014 TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 461: Accelerating Implementation of Transportation Research Results examines implementation practices used by public-sector nontransportation agencies, nonprofits, and academia to accelerate practical application of research results. The emphasis is on practices that might be useful for transportation agencies to create more ...
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 Sharing Operations Data Among AgenciesJune 10, 2014 TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 460: Sharing Operations Data Among Agencies document both the qualitative and quantitative business cases for sharing data among transportation-related agencies. The study also documents the institutional, legal, and technical challenges that can inhibit data sharing.
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 Using the Economic Value Created by Transportation to Fund TransportationMay 20, 2014 TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 459: Using the Economic Value Created by Transportation to Fund Transportation presents information on financing mechanisms used by transportation agencies to capture a portion of the economic value created by public investment in transportation infrastructure to fund transportation improvements. The report provides an overvi...
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 Roadway Safety Data Interoperability Between Local and State AgenciesApril 18, 2014 TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 458, Roadway Safety Data Interoperability Between Local and State Agencies provides an overview of the state of the practice regarding the interoperability between state and local safety data. The report also highlights agency practices that supporta data-driven safety program on all public roads.
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 Implementation of the AASHTO Mechanistic-Empirical Pavement Design Guide and SoftwareApril 16, 2014 TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 457: Implementation of the AASHTO Mechanistic-Empirical Pavement Design Guide and Software documents the experience of transportation agencies in the implementation of the 2008 American Association of State Highway and Transportation Officials (AASHTO) Mechanistic-Empirical Pavement Design Guide: A Manual of Practice (MEPDG) ...
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 Non-Nuclear Methods for Compaction Control of Unbound MaterialsFebruary 21, 2014 TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 456: Non-Nuclear Methods for Compaction Control of Unbound Materials documents information on national and international experience with non-nuclear devices and methods for measuring compaction of unbound materials.
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 Alternative Technical Concepts for Contract Delivery MethodsApril 3, 2014 TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 455: Alternative Technical Concepts for Contract Delivery Methods Transportation documents various methods by which agencies have successfully implemented alternative technical concepts (ATCs) during the highway contracting process. The report identifies methods that promote transparency and fairness, while at the same time p...
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 Response to Extreme Weather Impacts on Transportation SystemsMay 29, 2014 TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 454: Response to Extreme Weather Impacts on Transportation Systems examines eight recent cases of extreme weather in the United States from the perspectives of transportation operations, maintenance, design, construction, planning, communications, interagency coordination, and data and knowledge management. Appendices C-H are...
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 State Bridge Load Posting Processes and PracticesApril 11, 2014 TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 453: State Bridge Load Posting Processes and Practices is a synthesis of the practices of U.S. state governments in restricting weights of vehicles that can cross highway bridges and culverts to levels below legal loads. Bridges and culverts restricted for vehicle weights are called load posted structures. The load posting pr...
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 State Department of Transportation Fleet Replacement Management PracticesMarch 1, 2014 TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 452: State Department of Transportation Fleet Replacement Management Practices explores the current state of the practice regarding fleet replacement management and financing methods by state departments of transportation. The report also includes a discussion of the perceived strengths and weaknesses of different management ...
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 Emergency Medical Services Response to Motor Vehicle Crashes in Rural AreasSeptember 20, 2013 TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 451: Emergency Medical Services Response to Motor Vehicle Crashes in Rural Areas identifies potential factors that may help reduce the time needed to provide effective medical care to crash occupants on rural roads. |