Balanced mixture design (BMD) of asphalt mixtures comprises various elements that are likely to impact asphalt pavement performance. However, most BMD applications do not account for long-term aging. This gap limits the appropriateness of thresholds and BMD's potential to improve pavement performance because more additive and reclaimed materials av
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Truck platooning is a new Connected and Automated Vehicle (CAV) application poised to rapidly affect the nation’s trucking operations, which could have several profound impacts on the national inventory of bridges. The current study goal is to investigate potential impacts to bridge serviceability, as well as evaluate the effect on the strength lim
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United States. Department of Transportation. Federal Highway Administration
2025-01-01
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PDF
This brochure provides information regarding pathways to a career within the Turner-Fairbank Research Center. The areas included are: Summer Transportation Internship Program for Diverse Groups (STIPDG), Office of Personnel Management Pathways Programs, FHWA Professional Development Program (PDP), National Academy of Sciences/National Research Coun
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United States. Department of Transportation. Federal Highway Administration
2025-01-01
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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 handbook provides practitioners with information on how to conduct an engineering study to set a speed limit for a speed zone based on the provisions in the Manual on Uniform Traffic Control Devices for Streets and Highways (MUTCD). The discussion includes preparing for the study, the factors to consider, the data-collection process, evaluatin
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2025-01-01
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Special Issue - Weekly Motor Fuel Report
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PDF
The 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 Administration
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This fact sheet highlights how traffic management systems (TMSs) can be used to generate and display warning messages that alert travelers to congested traffic conditions before travelers encounter unexpected or unstable traffic flow conditions or stopped or queued vehicles. This includes: Desired Outcomes, Key Issues to Consider, Benefits, Lessons
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United States. Department of Transportation. Federal Highway Administration
2025-01-01
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PDF
This fact sheet highlights the various methods and tools used to estimate staffing needs for transportation management systems (TMS). Estimating current and future staffing and resource needs is essential to ensuring TMSs sustain or meet operational needs and performance expectations. However, agencies face numerous challenges and constraints in de
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United States. Department of Transportation. Federal Highway Administration
2025-01-01
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PDF
The Human Factors Team biannual highlights cover past, current, and planned future research being conducted at the Turner-Fairbank Highway Research Center.
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2024-12-25
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Special Issue - Weekly Motor Fuel Report
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PDF
The 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 Administration
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This report addresses the development of design-basis fire exposure levels for highway bridges, which can define the thermal load in a performance-based structural-fire engineering framework. Several approaches are presented for characterizing the spatial and temporal thermal impact of open-air fires from both vehicles and stationary fuel sources u
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2024-12-13
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Special Issue - Weekly Motor Fuel Report
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PDF
The 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 Administration
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2024-12-11
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Special Issue - Weekly Motor Fuel Report
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PDF
The 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 Administration
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2024-12-06
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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. Office of Highway Policy Information
2024-12-04
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Special Issue - Weekly Motor Fuel Report
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PDF
The 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 Administration
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United States. Department of Transportation. Federal Highway Administration. Federal Lands Highway Division
2024-12-01
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PDF
There are two basic specification types that are developed by writers in Federal Lands Highway (FLH): Project-specific Specifications to address a requirement for a single project and Supplemental Specifications to be approved for standard use on specified projects. Both types of specification are used in the Special Contract Requirements (SCRs) fo
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This techbrief highlights the research conducted to investigate the current use of nondestructive evaluation (NDE) data to assess the condition of bridge and tunnel elements. However, based on interviews with personnel in Lead Adopter States and after consultation with engineers at FHWA, the research team focused on bridges and bridge decks.
This technote explores the use of PL for culvert inspections. This project was carried out in collaboration with the Utah Local Technology Assistance Program (LTAP) and the Utah Department of Transportation (UDOT). This case study supported an extensive research project underway by Utah LTAP evaluating a variety of technologies to obtain metrics fo
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Traffic crashes are a leading cause of death in the United States. An extensive body of traffic safety literature explores the roadway design and behavioral contributors to fatal and serious injury crashes. Within this literature, there has been a growing recognition that some populations are significantly more likely to be killed or seriously inju
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