This report documents an independent evaluation of annual average daily traffic (AADT) estimates developed from traffic probes by StreetLight Data, Inc (StL). The Texas A&M Transportation Institute (TTI) researchers performed a systematic process to identify accurate permanent continuous counter sites maintained by public agencies and private entit
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2021-09-10
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PDF
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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United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology
2021-09-07
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ZIP
The Federal Highway Administration (FHWA) developed the innovative CARMASM Platform to encourage collaboration with the goal of improving transportation efficiency and safety. FHWA's interest in advancing Transportation Systems Management and Operations (TSMO) strategies with automated driving technology is focused on how infrastructure can move tr
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2021-09-05
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PDF
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. Department of Transportation. Federal Highway Administration
2021-09-05
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PDF
To address the nation's shortage of highway construction workers, the U.S. Department of Transportation's Federal Highway Administration (FHWA) established the Highway Construction Workforce Partnership (HCWP). In locations like Denver, Los Angeles, and Rhode Island, working groups formed to identify, train, and place qualified individuals into ski
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United States. Department of Transportation. Federal Highway Administration
2021-09-04
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PDF
In-place density of asphalt pavement mats and joints is an important factor in building cost-effective, long-lasting asphalt pavements. Recognizing the importance of in-place density, the FHWA recently completed a demonstration project for "Enhanced Durability of Asphalt Pavements through Increased In-place Pavement Density" to assist State Departm
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2021-09-03
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PDF
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 report represents a technology supplement to the 2014 Work Zone Intelligent Transportation Systems (WZITS) Implementation Guide (Report No. FHWA-HOP-14-008). The Guide forms the foundational framework, concepts, and methods for establishing a WZITS program. The Guide further introduces various Intelligent Transportation Systems (ITS) technolog
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Safe, accessible, and efficient transportation is a prerequisite for health and prosperity. In comparison to the nation’s urban areas, rural communities face unique challenges in providing transportation that effectively serves their residents. The purpose of this study is to identify and address unmet safety and mobility needs in rural areas. To i
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Since 1981, the Michigan Department of Transportation (MDOT) has worked with the Federal Highway Administration to complete the US 31 freeway connection between I-80/90 in northern Indiana to I-94 in Berrien County, Michigan. The latest construction on the US 31 freeway ended in 2003 with a terminal interchange at Napier Avenue in Berrien County. T
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This Technical Brief summarizes techniques employed by State DOTs in the use of high doses of reclaimed asphalt pavement (RAP) in asphalt mixtures and communicates the benefits observed.
Traffic Optimization for Signalized Corridors (TOSCo) is an innovative connected and automated vehicle application that has the potential to generate substantial mobility and air quality benefits for public agencies and potential fuel savings benefits for the traveling public. Under the TOSCo system, vehicles equipped with TOSCo functionality use s
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Federal regulations in 23 CFR part 630 subpart J require State highway agencies to conduct a Work Zone Process Review (WZPR) every 2 years to evaluate work zone processes and procedures, as well as identify systematic improvements to current and future projects. The Federal Highway Administration now encourages agencies to use a data-driven approac
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This project’s ultimate deliverable is a functional Vulnerable User Density Dashboard (https://mti.umd.edu/sdi) for the state of Maryland. The dashboard uses mobile device location data and electric scooter volume data to reflect pedestrian, bicycle, and electric scooter travel volumes and their exposure to roadway safety risk across all roadways i
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This report documents research undertaken to explore the use of unmanned aerial systems (UAS) to support bridge inspection. It addresses UAS platforms and sensors used to assist or augment inspections, the data-collection needs that UAS can meet, and means and methods for managing the tremendous amount of data that can be collected by UAS-mounted s
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United States. Department of Transportation. Federal Highway Administration. Office of Operations
2021-09-01
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Urban Congestion Report (UCR)
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PDF
The Urban Congestion Report (UCR) is produced on a quarterly basis and characterizes the most recent traffic congestion and reliability trends at the national and city level. Each quarterly UCR compares data from the most recent three months to the same three months in the previous year.
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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For this validation study, NREL compiled traffic volume data from permanent traffic counters at over 500 locations across the U.S. These data were used to validate annual average daily traffic (AADT) estimates developed by Streetlight Data using passive data sources. The analysis revealed a strong correlation between estimates derived from passive
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This report explains how to evaluate steel bridge details for susceptibility to constraint-induced fracture. The report begins with a review of fundamental principles of ductile behavior of steel structures and the effects of constraint and stress triaxiality. A brief history of constraint-induced fractures of steel bridges in the United States and
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The Federal Highway Administration’s (FHWA) Safety Compass newsletter aims to increase highway safety awareness and to provide resources to the highway safety community to help save lives. The newsletter is published three times a year and includes articles on safety-focused offerings from FHWA, other DOT modes; our State, Local, and Tribal partner
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