This technical manual describes the Federal Highway Administration’s Traffic Noise Model (TNM®) Version 3.0. Chapter 2 describes the process of determining noise emissions and levels at a reference location 15 m (50 ft) from the traffic noise source. This includes: the geometric discretizing of the study in the horizontal plane into elemental trian
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The Federal Highway Administration (FHWA) with the assistance of the Volpe Center Acoustics Facility conducted a study to quantify the agreement of FHWA’s Traffic Noise Model Version 3.0 (TNM 3.0) with measured highway noise data and with predictions from TNM 2.5. Forthis phase of validation, 281 hours of traffic noise data were collected at 14 hig
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The Federal Highway Administration (FHWA) with the assistance of the Volpe Center Acoustics Facility finalized the Traffic Noise Model (TNM®) version 3.0. This step-by-step guide introduces users to some of the basic concepts in highway-related noise modeling by using TNM 3.0. It provides detailed steps to create a basic project with two roadways,
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The successful deployment and operation of connected vehicle systems will require that devices, systems, and applications developed by different providers are compatible, interoperable, non-interfering, and in some instances, perhaps, interchangeable. Some devices, systems, and applications, such as active safety applications, may be required to me
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The successful deployment and operation of connected vehicle systems will require that devices, systems, and applications developed by different providers are compatible, interoperable, non-interfering, and in some instances, perhaps, interchangeable. Some devices, systems, and applications, such as active safety applications, may be required to me
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The successful deployment and operation of connected vehicle systems will require that devices and applications developed by different providers are compatible, interoperable, non-interfering, and in some instances, perhaps, interchangeable. Some devices, systems, and applications, such as active safety applications, may be required to meet minimum
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This report by The Cadmus Group, Inc. is the result of a contracted study and analysis of comparative and determinate sale price data of owner-occupied single-family residential dwelling (SFRD) units to facilitate the Federal Highway Administration’s (FHWA) consideration of whether there is a need to continue the Temporary Waiver of Methodology for
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2019-12-17
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FHWA Highway History Website Articles
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In November 1956, the American Municipal Association (AMA) and the American Association of State Highway officials (AASHO) formed a Joint Committee on Highways to help advance the expanded highway program by gathering a wider range of urban data than was available and to cooperate with highway and city officials. On January18, 1962, the AMA-AASHO C
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United States. Department of Transportation. Federal Highway Administration. Office of Operations
2019-12-17
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Travelers depend on the U.S. transportation system every day to meet commitments for work and friends and family, acquire/deliver goods and services, and respond to emergencies. If the system operates as expected and enables travel within a predictable amount of time, we can rely on it. When it doesn't, we can't. This lack of reliability affects ou
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United States. Federal Highway Administration. Office of Planning, Environment, and Realty
2019-12-12
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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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This report describes the approach and procedures that the Texas A&M Transportation Institute (TTI) Evaluation Team plans to use in performing a national assessment of the potential benefits associated with extrapolating the safety, mobility, environment, and public agency (SMEP) results from the three connected vehicle (CV) pilot deployments—Wyomi
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Five portland cement concrete (PCC) and five asphalt concrete (AC) pavement locations at each of seven field testing sites in the central and eastern United States represented a range of aggregate types, pavement surface ages, and climates. Albedo, thermal properties, and pavement surface characteristics data were collected, and cores were obtained
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United States. Department of Transportation. Federal Highway Administration. Office of Safety
2019-12-01
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The Pedestrian and Bike Forum newsletter provides information to FHWA stakeholders on reducing the number of pedestrian- and bicycle-related highway fatalities and serious injuries. Topics include updates on FHWA programs, spotlights on State and local noteworthy practices, initiatives with partner organizations, and upcoming events. It is publishe
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Unmanned aerial systems (UAS) are being used to change the way data are collected for land surveying. By utilizing sensors that provide high-resolution images or light detection and ranging (LiDAR), or both, on small UAS, the systems enable the collection of highly accurate data with a high density of data points collected. By utilizing photogramme
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Seven years ago, the Alaska Transportation Working Group published its first-ever long-range transportation plan for Federal lands in Alaska, the 2012 Alaska Federal Lands Long Range Transportation Plan (LRTP). This plan was a collaboration between a wide range of partners – the Bureau of Land Management, National Park Service, U.S. Fish and Wildli
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There is a widespread recognition and desire need by agencies and asphalt paving industry to use performance testing to complement volumetric properties and help ensure satisfactory asphalt pavement performance. Accordingly, there has been several initiatives throughout the nation to develop Performance Engineered Mixture Design (PEMD) processes fo
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This report summarizes the work under FHWA contract DTFH6117P00139 to critically evaluate the standard data format for two-dimensional/three-dimensional (2D/3D) pavement surface images. First, the standard data format was clarified as a container-codec format, which meets the state of the practice of using 2D/3D images for pavement condition evalua
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While the second Strategic Highway Research Program (SHRP2) Roadway Information Database (RID) was designed to link to SHRP2 Naturalistic Driving Study data, the level of coverage and accuracy of its mobile data, combined with the inclusion of supplemental data from existing sources, makes the RID a powerful stand-alone database as well. The RID as
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The Fixing America's Surface Transportation Act or "FAST Act" established the Advanced Transportation Congestion Management Technologies Deployment (ATCMTD) Program to make competitive grants for the deployment of advanced transportation technologies. The legislation also mandates reporting requirements for the grantees, including data on the benef
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2019-12-01
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Traffic Volume Trends is a monthly report based on hourly traffic count data reported by the States. These data are collected at approximately 5,000 continuous traffic counting locations nationwide and are used to estimate the percent change in traffic for the current month compared with the same month in the previous year. Estimates are re-adjuste
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