United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2021-05-01
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FHWA has constructed a national vehicle miles traveled (VMT) forecasting model where future VMT growth rates can be estimated for three major economic scenarios - normal, pessimistic, and optimistic growth. The normal growth scenario represents the most Likely economic outlook reflects IHS' assessment of most probable future trends in U.S. populati
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The Accessible Transportation Technologies Research Initiative (ATTRI) Program provides a venue that funds transit projects and technology development projects, which improves access to mobility and transportation for individuals with disabilities, older people, and veterans with disabilities. For each of the 5 current ATTRI projects, the ATTRI Ind
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This report highlights findings from Phase I of a project designed to evaluate the ruggedness of the standards for cyclic fatigue testing using an Asphalt Mixture Performance Tester (AMPT). These standards include AASHTO TP 107-18 and 133-19, which are applicable to 100-mm diameter and 38-mm diameter test specimens, respectively. The ruggedness eva
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The GIS in Transportation team publishes quarterly newsletters to share information about significant geospatial transportation news, events, and applications. Each issue highlights a specific transportation agency's application of GIS or geospatial data and technology.
This document is a technical summary of the Federal Highway Administration Report Impacts of Automated Vehicles on Highway Infrastructure (FHWA-HRT-21-015) (Gopalakrishna et al. 2020).
This document provides information to aid in understanding and using the Long-Term Pavement Performance (LTPP) program's Pavement Performance Database (PPDB), LTPP Traffic Analysis Software (LTAS) database, and contents of the Ancillary Information Management System (AIMS) and LTPP InfoPaveTM. This report describes the structure of the LTPP program
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Cable-stayed bridges have been recognized as the most efficient and cost effective structural form for medium- to long-span bridges over the past several decades. With their widespread use, cases of serviceability problems associated with large-amplitude vibration of stay cables have been reported. Stay cables are laterally flexible structural memb
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This updated Rails-with-Trails: Lessons Learned report documents how the state of the practice, perspectives, and context for rails-with-trails has evolved since 2002 and identifies updated effective practices for each phase of a rail-with-trail project, from development to design to construction, operation, and maintenance.
As part of the 2017 United States Department of Transportation (USDOT) Federal Highway Administration (FHWA) Roadway Surface Transportation Cybersecurity Framework project with Institute of Transportation Engineers (ITE), gaps were identified regarding the sharing of information amongst transportation stakeholders such as Infrastructure Owner Opera
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The Federal Highway Administration's Long-Term Pavement Performance (LTPP) program issues a triannual newsletter to inform you about the progress and activities of the program. Brief updates on progress in important program activities are provided, including data collection, data releases, new products and publications, pooled fund studies, and dat
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United States. Federal Highway Administration. Center for Accelerating Innovation
2021-05-01
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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.
Historically, crashes have been viewed as the result of an error on the part of the individual roadway user—a law or rule was broken, a wrong decision made. The Safe System approach acknowledges that humans make mistakes and, importantly, are vulnerable to the forces that occur during a crash. By focusing on eliminating fatal and serious injuries t
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While sulfate-induced corrosion problems have been observed in segregated grout, the existing literature lacks useful information about the role of sulfate ions in the corrosion process. To produce empirical data on the corrosivity and concentration of water-soluble sulfate ions under different grout conditions, researchers performed a laboratory s
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2021-05-01
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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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As a critical part of the infrastructure system, long-span bridges can be exposed to extreme conditions, such as floods, scours, and hurricanes, or severe dynamic loads, for example due to seismic shaking, blast, or impact. In spite of their importance to the resilience of adjacent communities, their redundancy and ability to mobilize alternative l
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2021-04-30
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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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