United States. Department of Transportation. Federal Highway Administration. Office of Operations
2020-04-01
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Work zones are a necessary part of the life cycle of our streets, roads, and highways. They provide a safe area for workers and a safe route for road users around needed road work activity (construction, maintenance, utility). Although work zones play a critical role, they can also be a major cause of congestion and delay. Every spring, the Federal
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Methods for modeling freight demand and goods movement in the United States (U.S.) are evolving from aggregated methods to disaggregated methods. Emerging technologies are providing opportunities for more efficient data collection and new data collection that support more advanced freight modeling, analysis and data development environments. An imp
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United States. Department of Transportation. Federal Highway Administration. Office of Operations
2020-04-01
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On an annual basis, over 1.1 million trucks and more than 5 million vehicles cross the Peace Bridge that spans the Niagara River and connects Western New York State and Southern Ontario, Canada.1 Twenty- five miles north on the Niagara River, about 800,000 trucks and 2.6 million vehicles annually cross the Lewiston- Queenston Bridge.2 Trucks crossi
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Inertial profilers can produce valid measurements of longitudinal road profile when they are operated under favorable conditions. However, their performance deteriorates when the host vehicle travels at low speed, decelerates, or comes to a stop. These limitations have hindered the application of inertial profilers for measurement of roughness on l
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This Technical Brief provides an overview of asphalt materials quality assurance with a focus on acceptance risks and potential strategies for minimizing them.
Automated traffic signal performance measures (ATSPM) are an enabling technology that leverages data collection and analysis for proactive traffic signal system management. This report highlights the technical outreach undertaken by FHWA to assist States in meeting their Every Day Counts (EDC) Round 4 implementation objectives with respect to ATSPM
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United States. Federal Highway Administration. Office of Planning, Environment, and Realty
2020-03-19
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This digest shares the latest information from a range of Federal and non-Federal sources, addressing transportation and its relationship to the human environment. Through this information exchange, FHWA hopes to foster dialogue at all levels and continue to further the state of the practice on these important topics in support of safety; infrastru
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Nondestructive deflection testing has played an important role in pavement evaluation, design, and management for several decades. During this period, the tool of choice for structural evaluation has been the falling weight deflectometer (FWD), due to its ability to accurately measure very small pavement deflections by means of a nondestructive loa
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United States. Federal Highway Administration. Office of Planning, Environment, and Realty
2020-03-05
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PDF
This digest shares the latest information from a range of Federal and non-Federal sources, addressing transportation and its relationship to the human environment. Through this information exchange, FHWA hopes to foster dialogue at all levels and continue to further the state of the practice on these important topics in support of safety; infrastru
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The Accessible Transportation Technologies Research Initiative (ATTRI) is an accessibility-oriented research project supported by multiple partners including: the U.S. Department of Transportation (USDOT); the Federal Highway Administration (FHWA); Federal Transit Administration (FTA); Intelligent Transportation Systems Joint Program Office (ITS JP
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