The goal of this project was to understand how the culture within law enforcement agencies impacts engagement in traffic safety enforcement. The four objectives were to understand: (1) how law enforcement leaders and officers prioritize traffic safety relative to other public safety issues; (2) self-reported attitudes, beliefs, and behaviors about
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This project aims to develop a mobile app that enables pedestrians with disabilities to more safely and more efficiently cross signalized intersections. The proposed technology concept is a smart phone app that interacts directly with a real-time, adaptive traffic signal control system at the intersection via Dedicated Short Range Communication (DS
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2019-05-01
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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. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2019-05-01
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PDF
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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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2019-05-01
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PDF
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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This report compares network-level friction measurements obtained with a Sideway-force Coefficient Routine Investigation Machine (SCRIM) and traditional locked-wheel skid trailer (LWST). The report also describes the results of two “harmonization” experiments at the two national LWST testing calibration facilities and recommends equations for conve
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This manual provides guidance on performing refined analysis of bridges. The manual describes “refined analysis” and the methods allowed by the American Association of State Highway and Transportation Officials (AASHTO) Load and Resistance Factor Design (LRFD). Guidance for the modeling of typical girder bridges at various levels of complexity are
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This document provides information and a how-to process for State Departments of Transportation and Local Public Agencies to consider Bridge Bundling for all funding sources. Topics covered include defining successful bridge bundling projects and programs, goals and objectives, funding and financing, coalition building, risk assessment, work types,
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Repair and rehabilitation of the aging highway infrastructure continues to be a challenging endeavor for all U.S. highway agencies. Thousands of miles of highway pavements need rehabilitation, and many of these highways carry over 100,000 vehicles/day, including a large percentage of trucks. Extended lane closures must be avoided to prevent compoun
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Small rotorcraft unmanned aerial systems have become increasingly common before, during, and after flooding disasters. A commonly used platform that retails for approximately $1,000 can perform six of the seven basic missions for flood events. The low cost of current UAS combined with the best practices that have emerged since their first introduct
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This report documents a Federal Highway Administration (FHWA) project to address the need to connect system-level, goal and objective-setting in the transportation planning process and operations planning that occurs among operators. Through document-based research and input from an expert practitioner group, the project team developed a basic five
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Based on prior studies, a 1 percent increase to in-place density (or 1 percent decrease in air voids) achieved through improved compaction was estimated to improve the fatigue performance of asphalt pavements between 8 and 44 percent and improve rutting resistance by 7 to 66 percent. In addition, a 1 percent increase in in-place density was estimat
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The purpose of this reference guide is to provide guidelines for load rating the nation’s highway tunnels to meet the regulatory requirements and to ensure consistency and uniformity of load rating those tunnels. This reference guide provides technical aspects for the load rating of tunnel structures that meets FHWA’s general load rating guidance a
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Pavement surface texture plays important roles in roadway safety and noise issues. More than 32,000 deaths and 2.3 million injuries occurred in more than 6 million vehicle crashes in the U.S. in 2014 (NHTSA 2016) and about 16 percent of those crashes took place on wet pavement (FHWA 2016). The two main causes of wet weather crashes are: 1) hydropla
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This case study focuses primarily upon how the Northeast Ohio Areawide Coordinating Agency (NOACA) integrates transportation asset management into the metropolitan planning process. The case study was produced by the Federal Highway Administration (FHWA) Transportation Asset Management Expert Task Group (TAM ETG) as an example of how asset manageme
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FHWA R&T Now is a news update of research, technology, and development from the U.S. Department of Transportation (USDOT), Federal Highway Administration (FHWA). The news update explores Exploratory Advanced Research (EAR), Infrastructure, Operations, Safety, Program Development, Recent Research Publications, Recent Periodicals, and About FHWA R&T
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United States. Federal Highway Administration. Center for Accelerating Innovation
2019-05-01
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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.
United States. Department of Transportation. Federal Highway Administration. Office of Safety
2019-05-01
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PDF
Safety is a national transportation performance goal area, but more importantly, it is the number one priority for all transportation system users. For this reason, every state Department of Transportation (DOT), metropolitan planning organization (MPO), and many local jurisdictions are investing in programs and projects to reduce fatalities and se
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United States. Department of Transportation. Federal Highway Administration. Office of Safety
2019-05-01
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PDF
Safety is a national transportation performance goal area, but more importantly, it is the number one priority for all transportation system users. For this reason, every state Department of Transportation (DOT), metropolitan planning organization (MPO), and many local jurisdictions are investing in programs and projects to reduce fatalities and se
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