United States. Federal Highway Administration. Exploratory Advanced Research Program
2009-01-01
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Metropolitan planning agencies face increasingly complex issues in modeling interactions between the built environment and multimodal transportation systems. Although great strides have been made in simulating land use, travel demand, and traffic flow, gaining the ability to model urban systems across these phenomena would be a revolutionary advanc
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United States. Federal Highway Administration. Exploratory Advanced Research Program
2009-01-01
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Is continuous sensing of soil properties during static pad foot roller compaction achievable? A new pad-based, rollerintegrated system for real-time measurement of the elastic modulus of fine- and mixed-grain soils is the goal of “Development of Soil Stiffness Measuring Device for Pad Foot Roller Compactor,” a project of the Federal Highway Adminis
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United States. Federal Highway Administration. Exploratory Advanced Research Program
2009-01-01
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Can a self-calibrating signal control system lead to wider adoption of adaptive traffic control systems? The focus of “Next Generation of Smart Traffic Signals,” an Exploratory Advanced Research (EAR) Program project, is a system that-—with little human intervention-—continuously monitors, learns, predicts, and responds to traffic demands and condi
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United States. Federal Highway Administration. Exploratory Advanced Research Program
2009-01-01
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Although much progress has been made in reducing concrete’s propensity to crack, the goal remains elusive. A novel approach to this problem is the focus of “High-Performance Stress-Relaxing Cementitious Composites for Crack-Free Pavements and Transportation Structures,” an Exploratory Advanced Research (EAR) Program project launched by the Federal
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United States. Joint Program Office for Intelligent Transportation Systems
2009-01-01
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The National ITS Program has been involved in the development of several key traffic analysis software systems, with the government playing a variety of roles. Sometimes the government directly sponsors the development and maintenance of the software. Sometimes the government partners with private vendors, which then integrate new algorithms into t
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Part 1Pavement Condition Evaluation, Impact, and Durability; Part 2Concrete Pavement Preservation, Repair, and Rehabilitation; Part 3Concrete Pavement Repair Techniques and Experiences; Part 4Concrete Pavement Surface Texture; Part 5Emerging Pavement Repair and Rehabilitation Technologies.
This guide is packed with useful information. It focuses on some of the less well-known safety messages the road offers you. It is designed to be kept in your glove compartment after it has been read so that you will have its valuable information at your fingertips. The contents are as follows: Introduction; (1) Reading the Road - for Safety; (2) P
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Invented over 10 years ago, empirical modedecomposition (EMD) provides a nonlineartime-frequency analysis with the ability to successfullyanalyze nonstationary signals. “MathematicalAnalysis of the Empirical Mode Decomposition”is a 3-year Exploratory AdvancedResearch (EAR) Program study awarded toPrinceton University by the Federal HighwayAdministr
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This report summarizes the current status of the Long-Term Pavement Performance (LTPP) program and its major activities -- data collection, data storage, data analysis, and product development. It describes the work that will be needed beyond 2009 to realize the full potential of the world's most comprehensive pavement performance database and the
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This report evaluates the applicability, Federal policy implications, and possible public and private sector roles related to peak pricing strategies at ports and intermodal facilities in the U.S. A number of ports and intermodal terminals are considering peak-period truck pricing strategies modeled on the Ports of Long Beach and Los Angeles PierPA
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United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center
2009-01-01
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This is a comprehensive listing of Turner-Fairbank Highway Research Center research documents published from October 2007 through September 2008, and includes listings of fact sheets, flyers, product briefs, reports, summaries, and TechBriefs.
United States. Federal Highway Administration. Office of Transportation Management
2009-01-01
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This volume focuses on forms of congestion pricing that do not involve tolls but that are still aimed at creating more efficient pricing mechanisms for automobile use
This booklet provides an overview of Safety Analyst. Safety Analyst is a set of software tools under development to help State and local highway agencies advance their programming of site-specific safety improvements. Safety Analyst will incorporate state-of-the-art approaches to safety management to guide the decision-making process on safety impr
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Public-private partnership (PPP) programs for highway infrastructure are not widely used in the United States. The Federal Highway Administration, American Association of State Highway and Transportation Officials, and National Cooperative Highway Research Program sponsored a scanning study to collect information about PPP programs for highway infr
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This technical summary discusses the application of a recently introduced technique, based on magnetic imaging tomography, to determine the thickness of freshly place concrete. This technique may be used for process testing and for acceptance testing during construction of new concrete pavements. The technique is applicable only to plain (nonreinfo
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This TechBrief discusses the potential use of fiber-reinforced polymer (FRP) bars in continuously reinforced concrete pavements (CRCP). Relative advantages and disadvantages of FRP bars are presented, and some specific considerations for the use of FRP bars in CRCP design and construction are described. This is followed by an overview of two recent
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To achieve their safety goals, many States select intersection safety as an emphasis area as part of their Strategic Highway Safety Plan (SHSP). However, while SHSPs may identify strategies to promote intersection safety, they lack the depth of information needed to establish an action plan for implementing the strategies necessary to achieve the s
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This guide was prepared to help local road agency maintenance workers understand the importance of maintaining and upgrading drainage features on their road system. Storm water that stands or ponds on the road surface and shoulders can contribute to crashes. It can cause hydroplaning under water conditions and skidding under icing conditions. Water
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This TechBrief presents the results of a nationwide study of the effects of transverse joint sealing on performance of jointed plain concrete pavement (JPCP). This study was conducted to assess whether JPCP designs with unsealed transverse joints performed differently from JPCP designs with sealed transverse joints. Distress and deflection data wer
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