 Statewide and Megaregional Travel Forecasting Models: Freight and PassengerOctober 16, 2017 TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 514: Statewide and Megaregional Travel Forecasting Models: Freight and Passenger documents current practices and emerging trends with travel forecasting models. The report explores the motivation for and capabilities of statewide and megaregion models, options for extending them and challenges states face doing so, ...
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 Evolving Debt Finance Practices for Surface TransportationJune 30, 2017 TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 513: Evolving Debt Finance Practices for Surface Transportation explores a variety of debt mechanisms and tools to finance transportation infrastructure investment. The amount of debt and frequency of issuance vary substantially across states. In most states, provisions included in constitutions or statutes (or combinations o...
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 Use of Fiber-Reinforced Polymers in Highway InfrastructureSeptember 13, 2017 TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 512: Use of Fiber-Reinforced Polymers in Highway Infrastructure documents the current state of the practice in the use of fiber-reinforced polymers (FRPs) in highway infrastructure. The synthesis identifies FRP applications, current research, barriers to more widespread use, and research needs. The objectives of the study are...
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 Relationship Between Chemical Makeup of Binders and Engineering PerformanceAugust 4, 2017 TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 511: Relationship Between Chemical Makeup of Binders and Engineering Performance documents the current practices of departments of transportation (DOTs) in the selection of the chemical composition of a binder used in pavement applications. The study provides information about the selection of binders and postproduction addit...
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 Resource Allocation of Available Funding to Programs of WorkMay 15, 2017 TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 510: Resource Allocation of Available Funding to Programs of Work explores the decision-making process in state departments of transportation (DOTs) and how they determine resource allocation among different programs. The report documents current processes, techniques, tools, and data used to evaluate and select funding alloc...
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 Highway Worker SafetyApril 21, 2017 TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 509: Highway Worker Safety identifies how state departments of transportation (DOTs) implement policies using highway worker safety and health data to reduce injuries and manage risk. The report is a synthesis of current proactive safety practices that will be useful when developing or updating policies, programs, or tools to...
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 Data Management and Governance PracticesApril 20, 2017 TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 508: Data Management and Governance Practices develops a collection of transportation agency data management practices and experiences. The report demonstrates how agencies currently access, manage, use, and share data.
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 Traffic Signal Preemption at Intersections Near Highway–Rail Grade CrossingsApril 16, 2017 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...
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 Effective Utility Coordination: Application of Research and Current PracticesFebruary 16, 2017 TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 506: Effective Utility Coordination: Application of Research and Current Practices documents the state of the practice regarding utility coordination. The objective of the project was to determine how previous research has been incorporated into current practice and compile information about how transportation agencies and ut...
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 Current Practices and Guidelines for the Reuse of Bridge FoundationsFebruary 27, 2017 TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 505: Current Practices and Guidelines for the Reuse of Bridge Foundations provides guidance on reusing bridge foundations, a sustainable option for many bridge replacement and rehabilitation efforts that can result in time and cost savings as well as reduced mobility impacts and environmental benefits. However, foundation reu...
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 Strategic Program Delivery MethodsApril 24, 2017 TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 504: Strategic Program Delivery Methods explores holistic approaches to maximizing the benefits of time and cost savings when delivering transportation programs, rather than delivering individual projects. While a considerable amount of published research has focused on the process of selecting an optimal project delivery met...
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 Leveraging Technology for Transportation Agency Workforce Development and TrainingFebruary 13, 2017 TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 503: Leveraging Technology for Transportation Agency Workforce Development and Training documents how state and local transportation agencies are using information and communication technologies (ICT) to train their workforce. The report explores the planning and resources required to implement and maintain a training and dev...
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 Practices for Establishing Contract Completion Dates for Highway ProjectsMarch 6, 2017 TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 502: Practices for Establishing Contract Completion Dates for Highway Projects documents current methodologies and procedures used by state transportation agencies to estimate contract time for various highway project delivery methods. Establishing contract time is an important part of the highway project development process ...
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 Pavement Management Systems: Putting Data to WorkJanuary 31, 2017 TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 501: Pavement Management Systems: Putting Data to Work documents current pavement management practices in state and provincial transportation agencies. The report focuses on the use of pavement management analysis results for resource allocation, determining treatment cost-effectiveness, program development, and communication...
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 Control of Concrete Cracking in BridgesFebruary 8, 2017 TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 500: Control of Concrete Cracking in Bridges provides information on methods used to control concrete cracking in bridge superstructures and substructures, and on the influence of cracking on long-term durability. Cracking of concrete in bridges continues to be a concern for bridge owners, particularly with bridge decks expos...
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 Alternate Design/Alternate Bid Process for Pavement-Type SelectionJanuary 23, 2017 TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 499: Alternate Design/Alternate Bid Process for Pavement-Type Selection documents the state of the practice in alternate design/alternate bid (ADAB) for pavement-type selection by highway agencies. ADAB is a contracting technique that allows the pavement-type selection decision to be made as part of the procurement process. C...
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 Application of Pedestrian Crossing Treatments for Streets and HighwaysDecember 14, 2016 TRB's NCHRP Synthesis 498: Application of Pedestrian Crossing Treatments for Streets and Highways compiles information on the state of existing practices regarding application of pedestrian crossing improvements, and does not produce new guidance. The report includes a survey of state departments of transportation (DOTs) and local transportation agencies, a synthesis of current recommended prac...
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 Post-Extreme Event Damage Assessment and Response for Highway BridgesDecember 26, 2016 TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 497: Post-Extreme Event Damage Assessment and Response for Highway Bridges reviews the procedures that state departments of transportation and two local authorities, New York City and Los Angeles County, use to assess the damage in bridges in response to extreme events and conduct emergency response activities. Extreme events...
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 Minimizing Roadway Embankment Damage from FloodingAugust 3, 2016 TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 496: Minimizing Roadway Embankment Damage from Flooding documents the state-of-the-practice on how the transportation community is protecting roadways and mitigating damage from inundation and overtopping. This report highlights major issues and design components specific to roadway embankment damage from flooding. It documen...
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 Use of Reclaimed Asphalt Pavement and Recycled Asphalt Shingles in Asphalt MixturesSeptember 12, 2016 TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 495: Use of Reclaimed Asphalt Pavement and Recycled Asphalt Shingles in Asphalt Mixtures summarizes current practices for the use of reclaimed asphalt pavement (RAP) and recycled asphalt shingles (RAS) in the design, production, and construction of asphalt mixtures. It focuses on collecting information about the use, rather t... |