On Thursday November 3, 2022, 58 attendees representing post-tensioning bridge constructors, inspectors, subject matter experts and bridge owners gathered at the Hyatt Regency Conference Space in Austin, Texas to discuss the progress and current state of post-tensioning (PT) technology and associated materials. This report presents the outcomes of
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United States. Federal Highway Administration. Center for Accelerating Innovation
2023-02-01
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Innovator
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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.
This report presents guidelines for developing and implementing the performance monitoring program for Specific Pavement Studies-10 Warm-Mix Asphalt Study experiment test sections. Federal Highway Administration Long-Term Pavement Performance regional support contractors must follow these guidelines to develop performance monitoring plans tailored
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Guidelines for the development and implementation of a material-sampling and testing program for each test site included in the Specific Pavement Studies-10 (SPS-10) warm-mix asphalt study are presented in this report. These guidelines should be followed by a Federal Highway Administration Long-Term Pavement Performance (LTPP) regional support cont
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The purpose of this study is to explore the potential to significantly enhance equity and reduce congestion experienced by city bus riders due to transportation network company (TNC) operations (most especially within corridors with significant bus service) through select TNC or government policy measures. The study analyzes data from a survey cond
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This study focuses on the large number of bicycle-involved collisions that demonstrate the need to prioritize analyzing and enhancing the safety of bicyclists. In recent years, transportation agencies have constructed a variety of bicycle lane configurations, including separated bicycle lanes (SBLs), yet the associated influence that an SBL may hav
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This document provides guidelines and information for documenting construction activities for the Specific Pavement Studies-10 (SPS-10) experiment warm-mix asphalt study. These guidelines should be followed by the Federal Highway Administration Long-Term Pavement Performance regional support contractor (RSC) when working with State and Provincial h
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A Peer Exchange was held March 22–23, 2016, in Atlanta, Georgia, to gather experts from different fields relating to geologic hazards, climate change, extreme weather events, and geotechnical asset management (GAM). The purpose was to share perspectives and brainstorm ideas on how FHWA can best continue its geologic hazards program and research. Fe
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Traffic professionals are exploring innovative intersection designs to determine if they can successfully accommodate multimodal transportation by reducing conflicts between moving vehicles and vulnerable road users or by lowering the impact force (reducing the vehicle speed and changing the collision angle in the event of a collision). The objecti
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The purpose of this report is to document the research plan and experimental design for the Specific Pavement Studies-10 (SPS-10) experiment for the Long-Term Pavement Performance (LTPP) program. Projects nominated for the SPS-10 experiment would be constructed specifically to satisfy experiment design cells within the experimental matrix and would
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The National Environmental Policy Act (NEPA) is a procedural statute that requires Federal agencies to assess the environmental effects of their proposed actions on the human environment prior to making decisions. These case studies present examples from around the United States of how safety can be incorporated in NEPA. This case study document be
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This study evaluated wrong-way-driving (WWD) crash countermeasures at freeway ramps and frontage roads. Specifically, the study focused on the safety effectiveness of geometric features, access management strategies, and traffic control devices (TCDs) that are potential WWD crash countermeasures. The research team compiled safety data representing
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This report presents the independent evaluation results of the Enhancing the Road Charge Pilot Program in California initiative, which was funded through Phase I of the U.S. Department of Transportation’s Surface Transportation System Funding Alternatives Program. The California Department of Transportation is one of eight entities to engage in pil
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This report provides guidelines and information for nominating candidate projects for the Specific Pavement Studies 10 Warm-Mix Asphalt Study and outlines participation requirements. Detailed project nomination forms and instructions are included.
2023-02-01
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FHWA Highway History Website Articles
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This article relates the story Beverly Ann Cover (Beverly Cover Norris), the first woman highway engineer in the U.S Bureau of Public Roads who joined in 1962.
This report documents all activities performed as part of the Long-Term Pavement Performance (LTPP) program’s Warm-Mix Asphalt (WMA) Study. The report describes the overall conduct of the project with a focus on the guidelines for recruitment, selection, implementation, construction, sampling, testing, and monitoring of the LTPP Specific Pavement S
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Geohazards—such as landslides, liquefaction, rockfalls, subsidence, expansive/collapsible soils, and erosion—can pose major threats to transportation assets. Extreme weather events can also trigger and/or exacerbate geohazards, and the increasing incidence of such events is a concern in certain regions of the United States. A geohazards management
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2023-02-01
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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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This guidebook informs State Departments of Transportation (DOTs), Metropolitan Planning Organizations (MPOs), and Regional Transportation Planning Organizations (RTPOs), as well as their planning colleagues, such as transit agencies, local governments, and Federal agencies, about effective practices for incorporating performance-based planning int
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This report applies concepts of organizational theory, specifically related to organizational structure, to explore ways in which organizational models and structural mechanisms can be used to advance transportation systems management and operations (TSMO) within departments of transportation (DOTs). It includes several case studies of organization
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