United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2023-10-02
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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 technical manual describes the Federal Highway Administration’s Traffic Noise Model (TNM) Version 3.2. Chapter 2 describes the process of determining noise emissions and levels at a reference location 15 m (50 ft) from the roadway or construction equipment noise source. This includes: the geometric discretizing of the project in the horizontal
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United States. Department of Transportation. Federal Highway Administration
2023-10-01
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PDF
Shared micromobility systems are fleets of micromobility devices (small, low-speed, human- or electric-powered transportation devices) available to the public for shared use. Devices may be located at fixed docking stations or distributed within the operation area as part of dockless systems. Shared systems typically require a smartphone applicatio
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This document contains eight case studies on potential approaches to virtual public involvement (VPI) in the National Environmental Policy Act (NEPA) process. The case studies showcase projects that held public hearings, including comment periods between March 2020 and fall 2021 when in-person gatherings were restricted due to the COVID-19 pandemic
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United States. Department of Transportation. Federal Highway Administration
2023-10-01
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PDF
The Federal Highway Administration (FHWA) is publishing this list of State Departments of Transportation (DOTs) and Metropolitan Planning Organizations (MPOs) who are required to establish targets and report progress for the performance measures related to the Congestion Mitigation and Air Quality Improvement (CMAQ) Program. There are three measure
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Ultra-high performance concrete (UHPC) is a class of concrete that has emerged as a compelling material for use in the design, construction, and preservation of structures. UHPC provides mechanical and durability properties that are enhanced and distinct relative to conventional concrete, thus necessitating the use of design methodologies that faci
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This virtual peer exchange brought together representatives from the Arizona, Ohio, Alaska, California, and Utah Departments of Transportation. The peer exchange facilitated discussion and collaboration around Unmanned Aircraft Systems (UAS) practices and UAS use cases across infrastructure inspections, emergency response, roadway analysis, earth m
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2023-10-01
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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. Department of Transportation. Federal Highway Administration
2023-10-01
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PDF
The FHWA 2022 Urban Congestion Trends report details trends and the current state of congestion and reliability on the NHS in 52 of the largest metropolitan areas in the United States. This report also includes examples of how agencies are using the NPMRDS for performance reporting and analysis, as well as for operational strategy evaluation and be
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The Federal Highway Administration (FHWA) has conducted research into the use of fixed firefighting systems (FFFS) in road tunnels. The objective was to consider the operational integration of highway tunnel emergency ventilation systems (EVS) with installed fixed firefighting systems (FFFS). This report is the summary report, which brings together
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This peer exchange brought together representatives from the Wyoming and Utah Departments of Transportation. The peer exchange facilitated discussion and collaboration around Unmanned Aircraft Systems (UAS) practices and UAS use cases across construction, material quantity calculations, earth movement, emergency response, asset management, and stru
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This document takes an expansive view and considers how pavement and bridge conditions can contribute to system performance areas, such as highway safety, freight mobility, or reliability. The document also considers other impacts, such as how attributes such as pavement shoulders, pavement friction, or bridge conditions contribute to highway safet
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This report expands on the work from a prior report Potential Categories for the Application of Blockchain in Intelligent Transportation Systems (ITS) (FHWA-JPO-23-987) by conducting a gap analysis on five selected distributed ledger applications from this report. The gap analysis was conducted by first determining the current state of these applic
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This report summarizes the key takeaways from the National Peer Exchange on Freight Resiliency for Climate-Related Disruptions Executive Summary Report. The Peer Exchange convened States, MPOs, and local agencies to discuss how to approach freight resiliency and learn about current practices in freight resiliency across the country. This event was
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This technote is designed to help State highway agencies (SHAs) and contractors become more acquainted with technical and background information regarding Portland limestone cement (PLC) and to promote its successful application nationwide. The document provides information regarding the history, specifications, sustainability, manufacture, enginee
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This report synthesizes the findings of four regional workshops held separately throughout 2022. These regional workshops brought together transportation agencies from around the Nation to discuss the state of practice and future use cases of UAS. It identified key areas for additional research concerning UAS regulations, funding, and technology. T
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A project to widen the Willow Valley Creek Bridge carrying Lake Mary Road in Arizona planned to add 5-ft (1.5-m) shoulders along each side. The rehabilitation plan also emphasized reusing the existing stone masonry piers and abutments and providing a steel girder superstructure that retains the same “look” as the existing bridge and blends well wit
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United States. Federal Highway Administration. Center for Accelerating Innovation
2023-10-01
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Innovator
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PDF
Innovator, published by the FHWA Center for Accelerating Innovation, advances implementation of innovative technologies and processes in the highway industry. Its audience is transportation professionals in highway agencies, trade and research groups, academia and the private sector, and the driving public.
United States. Department of Transportation. Federal Highway Administration
2023-10-01
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FHWA R&T Now
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PDF
A newsletter about research, development, and technology (RD&T) at the U.S. Department of Transportation’s (USDOT) Federal Highway Administration (FHWA).
This peer exchange brought together representatives from the Colorado, New Mexico, and Utah Departments of Transportation. The peer exchange facilitated discussion and collaboration around Unmanned Aircraft Systems (UAS) practices and UAS use cases across infrastructure inspections, emergency response, water quality, surveying, mapping, constructio
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