Economic Effect of Restricted Crossing U-The RCUT, aka J-turn intersection, is an innovative alternative intersection design that displaces leftturn and through movements from the minor street. There is sufficient evidence that these designs reduce severe injury crashes and the FHWA hence added them to their list of “Proven Safety Countermeasures.”
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United States. Department of Transportation. Federal Highway Administration. Western Federal Lands Highway Division
2019-11-01
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Federal Lands Highway
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PDF
The purpose of this report is to summarize the study of the transportation characteristics of the Teton Dam site and provide potential improvements to the site. Construction of the Teton Dam was completed in 1976 . On its first fill on June 5, 1976, the dam failed causing a catastrophic event leading to the loss of 11 lives and millions of dollars
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United States. Department of Transportation. Federal Highway Administration. Western Federal Lands Highway Division
2019-11-01
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Federal Lands Highway
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PDF
The Cascade Lakes Highway is located in Central Oregon, southwest of Bend (Figure 1: Map of Study Area). The highway is within the Deschutes National Forest and provides access to many recreation sites in the Forest. The highway’s underlying ownership is USFS, but is maintained by Deschutes County. Deschutes County has become a major tourist and re
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United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure
2019-11-01
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PDF
This Technical Brief provides an overview of the several initiatives that encompass the concept of Performance Engineered Pavements (PEP). This document serves as the first in a series of PEP technical briefs on designing and accepting our nation's pavements for performance. Future technical briefs will focus on Asphalt Performance Testing (APT), C
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This paper explores the public’s outlook on automated vehicles, focusing specifically on attitudes regarding safety, trust, and willingness to try, as well as the factors that influence those opinions. It compiles the results of numerous surveys and studies conducted over the past four years and tracks consumer attitudes over time, against the back
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The Federal Highway Administration (FHWA) Office of Safety, in cooperation with the Highway Safety Manual (HSM) Implementation Pooled Fund Study, recently completed a safety analysis needs assessment for TSMO. The safety analysis needs assessment characterized the current state of practice, knowledge, and skills for quantifying the safety performan
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The Federal Highway Administration (FHWA) Office of Safety, in cooperation with the Highway Safety Manual (HSM) Implementation Pooled Fund Study, recently completed a safety analysis needs assessment for TSMO. The safety analysis needs assessment characterized the current state of practice, knowledge, and skills for quantifying the safety performan
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Researchers at California Partners for Advanced Transportation Technology (PATH), a research and development program at the University of California-Berkeley, studied the potential benefits of cooperative adaptive cruise control (CACC) by deploying the technology in a platoon of three trucks. They built the CACC system and implemented it in three l
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2019-11-01
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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
2019-11-01
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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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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 Tech Brief focuses specifically on approaches commonly used for curing cast-in-place concrete pavements. The most common method is the application of membrane-forming curing compounds, although fogging, plastic sheets, wetted materials, and insulated blankets may also be used depending on the type of project and the ambient conditions during a
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Accelerated bridge construction (ABC) is a technique in which large bridge elements are fabricated offsite or next to the site and are then connected onsite to complete the bridge. One such ABC method is the use of full depth precast (PC) concrete deck panels, which are placed on top of steel girders connected via shear studs. The PC concrete deck
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A before-after empirical Bayes analysis was performed using data from 115 treated intersections in Charlotte, NC, and 218 treated intersections in Philadelphia, PA, to evaluate the safety effects of pedestrian countdown signals (PCSs). Additionally, the evaluation included 136 reference intersections in Charlotte, NC, and 597 reference intersection
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The Federal Highway Administration (FHWA) organized 40 States to participate in the FHWA Evaluation of Low-Cost Safety Improvements Pooled Fund Study as part of its strategic highway safety plan support effort. The purpose of the study was to evaluate the safety effectiveness of low-cost safety improvement strategies through scientifically rigorous
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The variability of a concrete paving mixture can have a significant impact on the performance of the concrete pavement and impact its overall service life. Mixture variability can lead to inconsistent workability, poor consolidation, built-in roughness, and areas of weaker, less durable concrete, all of which can negatively affect pavement performa
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United States. Department of Transportation. Intelligent Transportation Systems Joint Program Office
2019-11-01
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PDF
Connected vehicle technologies enable vehicles, roadside infrastructure, and personal portable devices to communicate and share information through wireless communication technology. Onboard units (OBUs) installed on vehicles will continually broadcast information on the vehicle’s position, direction, and speed in the form of a Basic Safety Message
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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
2019-11-01
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PDF
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.
Individuals with cognitive disabilities, such as intellectual and developmental disability, those on the autism spectrum, and people with traumatic brain injuries, can face significant obstacles in accessing America’s many transportation options. Many of these individuals do not own or use personal vehicles, and can be reliant on public transportat
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