Ultra-high performance concrete (UHPC) is an advanced cementitious composite material which has been developed in recent decades. When compared to more conventional cement-based concrete materials, UHPC tends to exhibit superior properties such as increased durability, strength, and long-term stability. This experimental investigation focused on th
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Ultra-high performance concrete (UHPC) is an advanced cementitious composite material which has been developed in recent decades. When compared to more conventional cement-based concrete materials, UHPC tends to exhibit superior properties such as increased durability, strength, and long-term stability. This experimental investigation focused on th
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This report provides a summary of a 1.5-day peer exchange held in July 2009 focusing on select transportation agencies' applications of 3D visualization techniques. FHWA's Office of Interstate and Border Planning sponsored the peer exchange.
Weather causes a variety of impacts on the transportation system. An Oak Ridge National Laboratory study estimated the delay experienced by American drivers due to snow, ice, and fog in 1999 at 46 million hours. While severe winter storms, hurricanes, or floodings can result in major stoppages or evacuations of transportation systems and cost milli
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This report provides a summary of a 1.5-day peer exchange convened with select recipients of FHWA's first Eco-Logical grant. The purpose of the exchange, which was held in Austin, TX, in July 2009, was to allow grant recipients the opportunity to share information on and learn about the various GIS activities implemented with support from the grant
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This document presents the findings of the evaluation of the process used by eight project sites to develop a design for a Travel Management Coordination Center (TMCC) for improved coordination of human service transportation within a region. The TMCC project was funded by U.S. DOT as part of the Mobility Services for All Americans (MSAA) initiativ
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The GIS in Transportation team publishes quarterly newsletters to share information about significant geospatial transportation news, events, and applications. Each issue highlights a specific transportation agency's application of GIS or geospatial data and technology.
This user manual provides guidance on how to use the new High PERformance PAVing (HIPERPAV®) III software program for the analysis of early-age Portland cement concrete pavement (PCCP) behavior. HIPERPAV® III includes several improvements over previous versions including (1) improvements to the interface to allow users to navigate through the softw
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This report provides an overview of practices related to developing and sustaining a Regional Traffic Signal Operations Program. The purpose for a Regional Traffic Signal Operations Program is to provide regional partners a formal framework to collectively manage the signal system performance for efficiency and consistency. A key benefit of a regio
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The equilibrium scour at a bridge caused by pressure flow with critical approach velocity in clear-water simulation conditions was studied both analytically and experimentally. The flume experiments revealed that (1) the measured equilibrium scour profiles under a bridge are more or less consistent across the channel width; (2) all the measured sco
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The Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users (SAFETEA-LU), which was signed into law in August 2005, contained several provisions focused on streamlining the environmental review process. One of these provisions, Section 6002, allowed for State Department of Transportation (State DOT) funding of staff, at
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2009-10-01
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PDF
On a monthly basis, each State is required to report to the Federal Highway Administration (FHWA), the amount of gallons taxed by that state. This data is analyzed and compiled by FHWA staff. The data on the amount of on-highway fuel use for each State is then used to attribute federal revenue to each State. Yearly, the FHWA, Office of Policy, prov
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This TechBrief is a technical summary of the Federal Highway Administration report, "Safety Evaluation of Improved Curve Delineation" (FHWA-HRT-09-045). The objective of this study was to evaluate the safety effectiveness of improved delineation on horizontal curves through signing improvements.
United States. Federal Highway Administration. Office of Research, Development, and Technology
2009-10-01
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PDF
Today's transportation professionals, with limited resources available to them, are challenged to meet the mobility needs of an increasing population. At many highway junctions, congestion continues to worsen, and drivers, pedestrians, and bicyclists experience increasing delays and heightened exposure to risk. Today's traffic volumes and travel de
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Today's transportation professionals, with limited resources available to them, are challenged to meet the mobility needs of an increasing population. At many highway junctions, congestion continues to worsen, and drivers, pedestrians, and bicyclists experience increasing delays and heightened exposure to risk. Today's traffic volumes and travel de
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Today's transportation professionals, with limited resources available to them, are challenged to meet the mobility needs of an increasing population. At many highway junctions, congestion continues to worsen, and drivers, pedestrians, and bicyclists experience increasing delays and heightened exposure to risk. Today's traffic volumes and travel de
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Today's transportation professionals, with limited resources available to them, are challenged to meet the mobility needs of an increasing population. At many highway junctions, congestion continues to worsen, and drivers, pedestrians, and bicyclists experience increasing delays and heightened exposure to risk. Today's traffic volumes and travel de
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Today's transportation professionals, with limited resources available to them, are challenged to meet the mobility needs of an increasing population. At many highway junctions, congestion continues to worsen, and drivers, pedestrians, and bicyclists experience increasing delays and heightened exposure to risk. Today's traffic volumes and travel de
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United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology
2009-10-01
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PDF
This TechBrief highlights the results of a research program that evaluated an ultra-high performance concrete (UHPC) pi-girder cross section prototype developed for use in short- and medium-span highway bridge applications.
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