United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2022-04-03
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The Weekly Traffic Volume Report estimates the vehicle miles traveled (VMT) for interstate highways and how the total travel measured by VMT compares with travel that occurred in the same week of the previous year. The VMT is further split into passenger vehicle and truck components. The information gives new insights into the effect on traffic by
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United States. Federal Highway Administration. Office of International Programs
2022-04-01
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The FHWA Offices of Bridges & Structures and Research & Development leveraged the services of other offices within FHWA (Office of International Programs and the Office of Innovation Management, Education, and Partnership) to collaborate with international bridge owners and experts on advancements in post-tensioning (PT). These collaborations have
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This Guide provides information to load rating engineers in the application of Modified Compression Field Theory (MCFT) when load rating concrete bridges in shear. It includes a literature review of recent research on load rating and summarizes a research study on the effects of minimum shear reinforcement amounts relative to load rating. This Guid
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United States. Federal Highway Administration. Office of International Programs
2022-04-01
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Since 1991, the Federal Highway Administration's (FHWA) Global Benchmarking Program (GBP) has conducted studies that seek out the world's best highway innovations and bring them to the United States. The GBP has been instrumental in documenting and promoting transportation agency management practices such as performance measures, asset management,
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United States. Federal Highway Administration. Center for Accelerating Innovation
2022-04-01
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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.
Quality assurance (QA) and other construction data contain information about quality of materials and construction that can potentially serve as leading indicators of pavement performance. This project evaluated approaches to integrate QA and construction data into an agency's pavement management system (PMS) for improving performance forecasting m
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United States. Department of Transportation. Federal Highway Administration
2022-04-01
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The BIL continues the Railway-Highway Crossings Program (RHCP), which provides funds for safety improvements to reduce the number of fatalities, injuries, and crashes at public railway-highway grade crossings.
Determining bridge geometry is central to the work of bridge engineers and technicians. This Manual provides geometric parameters, characteristics, behaviors, and calculations for the evaluation and design of various bridge types. The Manual is organized in three parts: General, Concrete, and Steel.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2022-04-01
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The Weekly Gasoline Product Supplied Report offers insight on weekly fluctuation of the gasoline product supply, which is an important part of any analysis of construction trends, materials and operating costs associated with highway repair and construction, and changes in traffic volume. These data come directly from the Energy Information Adminis
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This brief summarizes an evaluation of the Enhanced Prediction of Vehicle Fuel Economy and Other Vehicle Operating Costs (VOC) research project. The research project sought to update existing VOC equations used by the Federal Highway Administration (FHWA) in the Highway Economic Requirements System (HERS) model. The purpose of the evaluation was to
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United States. Federal Highway Administration. Office of International Programs
2022-04-01
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Transportation agencies across the United States are challenged with keeping the nation's four million miles of roads and over 610,000 bridges in good condition while balancing efficiency, equity, and environmental concerns. Since 2002, FHWA has been promoting Accelerated Bridge Construction (ABC) using Prefabricated Bridge Elements and Systems (PB
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United States. Department of Transportation. Federal Highway Administration
2022-04-01
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The BIL establishes the Carbon Reduction Program (CRP), which provides funds for projects designed to reduce transportation emissions, defined as carbon dioxide (CO2) emissions from on-road highway sources.
The Federal Highway Administration initiated the Cooperative Driving Automation (CDA) Program, formerly known as the CARMASM Program, to advance the research and development of CDA to accelerate market readiness and deployment. CDA aims to improve the safety, traffic throughput, and energy efficiency of the transportation network by allowing road u
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Intersections are critical points of access to local and regional destinations for all roadway users. When designed with pedestrians and bicyclists explicitly in mind, all types of intersections can facilitate safe, accessible, convenient, and comfortable walking and bicycling. The purpose of this guide is to inform the state of the practice concer
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The purpose of this study was to conduct two human factors field studies examining the utility of the presence of the Flashing Don't WALK (FDW) icon (i.e., the flashing hand) during the countdown pedestrian signal (CPS). Phase I examined pedestrians' comprehension of the CPS with and without the FDW signal, and the effect of removing the FDW on ped
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2022-04-01
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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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Lighting of pedestrian facilities plays a key role in increasing the safety performance of the road network for all users. Effective pedestrian lighting installations are a means of addressing the vulnerability of pedestrians during dark conditions and improving safety and security of all road users spanning different ages and abilities, including
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Balanced Mix Design (BMD) is described as an "asphalt mix design using performance tests on appropriately conditioned specimens that address multiple modes of distress taking into consideration mix aging, traffic, climate, and location within the pavement structure." Goals for implementation of BMD may differ among State Departments of Transportati
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2022-03-30
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FHWA Highway History Website Articles
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Great achievement is sometimes overshadowed by greater achievement. Logan Waller Page is an example. As Director of the Federal road agency for 13 years (1905 to 1918), he advanced the science of road building and promoted the Federal-aid highway program he helped create in 1916. However, his successor, Thomas H. MacDonald, headed the agency for 34
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