These Standard Specifications for the Construction of Roads and Bridges on Federal Highway Projects are issued primarily for constructing roads and bridges on Federal Highway projects under the direct administration of the Federal Highway Administration. These specifications are cited as "FP-24" indicating "Federal Project" Standard Specifications
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The Federal Highway Administration’s (FHWA) Advanced Digital Construction Management Systems (ADCMS) program seeks to promote the application of advanced digital tools to mitigate discrepancies in schedules and budgets, create more sustainable infrastructure, and ease communications between project stakeholders. With the ADCMS program FHWA supports
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United States. Department of Transportation. Federal Highway Administration. Office of Operations
2024-01-01
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National Travel Time Dashboard: Interstate Highways
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PDF
The Monthly Urban Congestion Report (UCR) provides a state-level overview of traffic congestion and reliability trends on Interstate highways. Published every month, the report compares data from the most recent month with the same month in the previous year. It uses travel time data from the Federal Highway Administration’s National Performance Ma
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Widespread implementation of safety countermeasures supports the Safe System Approach and can accelerate achieving local, State, and National safety goals. This document introduces the Safe System Roadway Design Hierarchy as a tool to characterize engineering and infrastructure-based countermeasures and strategies relative to their alignment with t
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United States. Federal Highway Administration. Office of Safety and Operations Research and Development
2024-01-01
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PDF
This fact sheet provides information regarding how pedestrian and bicyclist fatalities make up about 19 percent of all traffic fatalities in the United States. Both drivers and automated vehicles often have blind spots or limited sight lines where they cannot see vulnerable road users on the road. These visual limitations potentially contribute to
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2024-01-01
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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 Safety and Operations Research and Development
2024-01-01
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PDF
This fact sheet provides information on the Cooperative Driving Automation (CDA) tools that Saxton Transportation Operations Laboratory (STOL) used to improve road user safety. The suite of tools includes CARMA PlatformSM, CARMA MessengerSM, and CARMASM, 1Tenth, which aid in conducting research and testing of CDA technology.(4) Two of the tools wit
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In an effort to encourage the use of strategic pavement preservation on all roadways, the FHWA conducted a study of State Departments of Transportation (DOTs)’ pavement preservation practices and conducted a gap analysis focusing on successful implementation strategies to evaluate the effectiveness of pavement preservation processes. The study of p
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Since the publication of the Transportation System Preservation Research, Development, and Implementation Roadmap in 2008, most State departments of transportation (DOTs) have established bridge preservation programs and have made significant progress in the areas of bridge preservation practice and research.(1) State DOTs have investigated, develo
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United States. Federal Highway Administration. Office of Safety and Operations Research and Development
2024-01-01
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PDF
This test case proved the benefits of CDA application in signalized intersections with adaptive settings and helped provide a better understanding of its advantages. Potential for future work remains high. In particular, the developed framework can be significantly improved by completing further research in the following areas: Large Scale Testing,
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United States. Department of Transportation. Federal Highway Administration
2024-01-01
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PDF
On rural roadways, traffic incident responders face several unique roadway characteristics and conditions that create safety challenges for both responders and the traveling public. These safety challenges can slow the Traffic Incident Management (TIM) response timeline (detection, notification, and arrival stages), disrupt responder communications
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Using alternative materials (e.g., lightweight, recycled) in geotechnical applications may be advantageous compared to conventional structural backfills. This report summarizes current knowledge and the state of practice for using alternative backfill materials in applications, including backfills for retaining walls, bridge abutments, and pipes/cu
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The Database for Air Quality and Noise Analysis (DANA) tool version 2.1 provides traffic-related inputs to the Motor Vehicle Emission Simulator (MOVES) vehicle emissions model and the Traffic Noise Model (TNM). DANA provides real world measurements of traffic conditions for use in environmental analyses. By having these data already compiled, envir
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The 2022 National Household Travel Survey (NHTS) provides an inventory of daily personal travel in the United States. It is the only source of national-level multimodal statistics on personal travel in the United States. The survey series (conducted since 1969) includes demographic data on households, people, and vehicles as well as detailed inform
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United States. Department of Transportation. Federal Highway Administration
2024-01-01
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PDF
From 2017 to 2021, over 83,000 people died on rural roadways; this accounts for 43 percent of all roadway deaths despite only 20 percent of the U.S. population residing in these areas and only 31 percent of vehicle miles traveled occurring in rural areas. Furthermore, 43 percent of speed- related fatalities, 56 percent of roadway departure fataliti
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This report details the approach and findings from research conducted regarding the occurrence of responder struck-by crashes. There is not one national source of responder struck-by crashes from which to draw and analyze data to better understand and mitigate these tragic incidents. This project sought to cast a wide net across many different pote
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In recognition of the prevalence of asphalt concrete (AC) overlays as a rehabilitation solution for existing portland cement concrete (PCC) pavements, this project looked at State Departments of Transportation (DOTs) practices for the evaluation, design, construction, maintenance, and rehabilitation of AC/PCC composite pavements. This was primarily
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United States. Department of Transportation. Federal Highway Administration
2024-01-01
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PDF
Since 1995, the Environmental Excellence Awards have recognized leaders across the country who make outstanding contributions to environmental stewardship and partnerships above and beyond traditional transportation project outcomes. The winning projects and programs exemplify FHWA’s strategic goals of safety, economic strength and global competiti
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