The purpose of the Congestion Mitigation and Air Quality Improvement Program Emissions Calculator Toolkit (CMAQ Toolkit) is to provide users a standardized approach to estimating emission reductions from the implementation of a CMAQ-funded project. The CMAQ Toolkit uses emission rates for highway vehicles based on a series of project-scale and nati
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The objective of this manual is to produce a comprehensive reference that covers the technical aspects of welding of highway structures with an emphasis on steel highway bridges. The target audience for the reference manual is the DOT employees and their representatives and consultants involved with the welding and fabrication of steel highway stru
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2019-08-01
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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 project provides a review of current work zone crash reporting practices in the US in general and specifically in Louisiana. While national guidelines such as the MMUCC standardize definitions and data elements, the degree to which states have adopted the MMUCC guidelines/data elements regarding work zone crashes varies considerably across sta
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The Federal Highway Administration (FHWA) initiated the National Dialogue on Highway Automation (National Dialogue) workshop series. The National Dialogue was a series of meetings held across the country to facilitate information-sharing and to engage the transportation community in a conversation focused on how to safely and efficiently integrate
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The movement of superheavy loads (SHLs) has become more common over the years since it is a vital necessity for many important industries, such as chemical, oil, electrical, and defense. SHL hauling units are much larger in size and weight compared to the standard trucks. SHL gross vehicle weights may be in excess of a few million pounds, so they o
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The Federal Highway Administration (FHWA) initiated the National Dialogue on Highway Automation (National Dialogue) workshop series. The National Dialogue was a series of meetings held across the country to facilitate information sharing and to engage the transportation community in a conversation focused on how to integrate automated vehicles into
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The System and Subsystem Requirements Specification establishes the functional, performance, design, and development requirements for this project. Requirements are detailed for each component that is being developed as part of AbleLink Project #1: Leveraging Innovative Technology to Develop the SMART Wayfinding Standard to Facilitate Independent U
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The Federal Highway Administration (FHWA) initiated the National Dialogue on Highway Automation (National Dialogue) workshop series. The National Dialogue was a series of meetings held across the country to facilitate information-sharing and to engage the transportation community in a conversation focused on how to safely and efficiently integrate
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This report details the proceedings of a peer review of Robust Decision Making (RDM), an exploratory modeling based approach for informing decisions under deep uncertainty, and of the TMIP Exploratory Analysis and Modeling Tool (TMIP-EMAT), focusing applications for the Sacramento Area Council of Governments. The peer review was intended to introdu
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Over the years, many improvements in the best practices in the design of CRCP have been implemented to improve long-term performance. These improvements have resulted from experience from the field, better understanding of CRCP behavior, improved structural modeling of CRCP, improved materials, and improved construction processes. A compendium of t
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United States. Department of Transportation. Federal Highway Administration. Office of Safety
2019-08-01
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PDF
Collisions involving pedestrians and bicyclists comprise a large proportion of traffic fatalities every year. With the surge of connected vehicle (CV) technology and push for increased adoption of alternative travel modes, V2P systems are being developed to detect and communicate the presence of at-risk pedestrians or bicyclists through augmented s
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The roundabout project emission reductions calculator estimates the emissions benefit for installing a roundabout in place of a traditional signalized or un-signalized intersection. This tool is intended for a single or double lane roundabout with three or four approaches. 1 Emission reductions are estimated by calculating the reduction in idling e
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Typically, the practice of recording as-built conditions during construction involves marking up paper or electronic portable document file (PDF) plan sheets. The purpose of the marked-up plans is to have a permanent record of what is built and accepted during the construction project. This information is kept in electronic or physical cabinets and
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Crowdsourcing is the practice of enlisting the services of a large number of diverse people to solve a problem or address a need that would otherwise be outside an organization’s resources or means to tackle. Crowdsourcing leverages the collective wisdom and unique insights of a crowd by distributing the workload across a large group, incentivizing
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2019-08-01
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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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United States. Federal Highway Administration. Office of Bridges and Structures
2019-07-30
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ZIP
HY-8 automates culvert hydraulic computations utilizing a number of essential features that make culvert analysis and design easier. An HY-8 User Manual is included with the software installation (access via 'Help' button on top toolbar) to provide important information on the technical features, capabilities, and limitations of the software.Build
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United States. Federal Highway Administration. Office of Planning, Environment, and Realty
2019-07-25
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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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Given the varying stages of Transportation Systems Management and Operations (TSMO) adoption and advancement, the Federal Highway Administration identified the need for case studies to provide examples of common challenges and best practices for transportation agencies to learn from each other. This is one of 12 case studies developed to support or
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