United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology
2018-02-01
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PDF
This TechNote introduces ultra-high performance concrete (UHPC) as a potential solution for bridge deck overlays. A brief review of the history and development of UHPC is presented, followed by a summary of the properties that make UHPC a viable overlay solution. A laboratory investigation on the tensile bond strength of a UHPC specially formulated
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United States. Department of Transportation. Federal Highway Administration. Office of Safety
2018-02-01
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PDF
The Highway Safety Benefit-Cost Analysis (BCA) Tool (the Tool) supports the implementation of the methods described and demonstrated in the Highway Safety Benefit-Cost Analysis Guide (the Guide). Specifically, the Tool provides a method for preparing a simple economic analysis of infrastructure projects, helping users to quantify projects costs as
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United States. Federal Highway Administration. Office of Planning, Environment, and Realty
2018-01-25
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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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This primer outlines key concepts and expectations of a Transportation Management Area (TMA) Planning Certification Review. Reflecting on the collective experiences of past Certification Reviews, this includes references to relevant laws and regulations, policies, and otherresources to guide the TMA planning partners (Metropolitan Planning Organiza
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Intelligent transportation system deployments have enabled great advances in operational awareness and response based on the data they gather on the current state of the roadways. The next step in decision support is to forecast road conditions and build awareness of potential degradations before problems occur. Real-time traffic simulations and ro
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The Smart City Demonstration Program is intended to improve access through expanded mobility options in major job centers, enhance visitor experience by better connecting visitors to transportation options, stimulate regional economic prosperity and compete globally through smart logistics, better connect Columbus residents to safe, reliable transp
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This is the third issue of this technical advisory. The original (T 5140.26) was issued after the investigation into the ceiling panel collapse in the I-90 Seaport Connector Tunnel in Boston, MA was complete. The primary cause of that failure was the use of a “fast set” epoxy with inadequate creep resistance. A contributing factor was the irregular
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United States. Federal Highway Administration. Office of Planning, Environment, and Realty
2018-01-11
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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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United States. Department of Transportation. Federal Highway Administration. Office of Federal Lands Highway
2018-01-02
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PDF
The Federal Highway Administration Federal Lands Highway Program was established to promote effective, efficient, and reliable administration for a coordinated improvement program of roads and bridges on public lands; to protect and enhance our Nation’s natural resources; and to provide needed transportation access for Native Americans. We serve as
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United States. Department of Transportation. Federal Highway Administration
2018-01-01
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Federal Lands Highway
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PDF
The National Park Service (NPS) and City and Borough of Sitka (CBS) requested a review of potential actions to improve the safety performance of Sawmill Creek (SMC) Road. The request is in response to concerns for the safety of visitors and residents who frequently cross SMC Road to access tourist sites and residences. SMC Road is a heavily traffic
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This study provides general background on permafrost thaw, the implications for roadways, how future thawing can be projected, and what can be done to adapt to the impacts.
This implementation report presents an expanded database for calibration of the SE load factor for foundation movements in the AASHTO LRFD Bridge Design Specifications. The expanded database includes information from several state Departments of Transportation as well as other sources. Statistics are presented based on data from each source. Recomm
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2018-01-01
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FHWA Highway History Website Articles
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PDF
As the magazine celebrates its anniversary, let’s take a look back at its evolution. Over the course of 100 years, the only constant is change. Public Roads is no exception. With this issue, the Federal Highway Administration’s magazine reaches 100 years of providing information on every aspect of highway development and the role of highways in the
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2018-01-01
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FHWA Highway History Website Articles
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PDF
President Woodrow Wilson initiated the Federal-aid highway program by signing the Federal Aid Road Act on July 11, 1916. He does not appear to have played a direct role in securing congressional approval, but his team at the Department of Agriculture, particularly Director Logan Waller Page of the Office of Public Roads and Rural Engineering, was i
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The objective of this project was to develop a guidance report to identify methods that may produce self-enforcing, or self-explaining, roadways during the geometric design process. While safety performance associated with these methods is not well understood yet, an implied outcome of effective speed management is that less severe crashes will res
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Advanced next generation communications technologies offer the potential to greatly improve safety, system efficiency, and mobility across our Nation’s roadways. These new technologies and processes can address both traditionally difficult as well as entirely new challenges facing the transportation sector by expanding on available solutions, offer
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Automated vehicles have the potential to bring about transformative safety, mobility, energy, and environmental benefits to the surface transportation system. They are also being introduced into a complex transportation system, where second-order impacts, such as the possibility of increased vehicle-miles traveled, are of significant concern. Given
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United States. Department of Transportation. Intelligent Transportation Systems Joint Program Office
2018-01-01
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PDF
Over the course of four days in the summer of 2018, a watershed moment in the maturation of connected vehicle technologies occurred at the Turner-Fairbank Highway Research Center (TFHRC), a federally owned and operated national research facility in McLean, Virginia. Through a collaborative effort, the U.S. Department of Transportation (U.S. DOT) an
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2018-01-01
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PDF
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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