United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology
2011-01-01
|
FHWA R&T Now
|
PDF
Federal Highway Administration's FHWA R&T Now is a newsletter containing information and updates about research, technology, and development from the U.S. Department of Transportation, Federal Highway Administration. The newsletter is an electronic newsletter and is updated approximately every other month.
Successes in Stewardship is a Federal Highway Administration (FHWA) bimonthly newsletter highlighting current best practices in stewardship and environmental review from around the country.
This report provides a summary of a peer exchange sponsored by the Vermont Agency of Transportation (VTrans). The peer exchangeconvened Vermont’s Strategic Highway Safety Plan (SHSP) Core Group to discuss the strengths and weaknesses of Vermont’s currentSHSP and to identity the opportunities and next steps for updating Vermont’s plan.Vermont’s safe
...
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2011-01-01
|
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
...
United States. Department of Transportation. Federal Highway Administration. Office of Safety
2011-01-01
|
PDF
This document is intended to help identify sign sheeting materials for rigid signs and their common specification designations. It is not a qualified product list. FHWA does not endorse or approve sign sheeting materials. Many other sheeting materials not listed here are available for delineation and construction/work zone uses.
This report is the second in a two-part series to provide engineers with the necessary background knowledge of Geosynthetic Reinforced Soil (GRS) technology and its fundamental characteristics as an alternative to other construction methods. It supplements the interim implementation manual (FHWA-HRT-11-026), which outlines the design and constructi
...
This document presents key findings from the light-vehicle field operational test conducted as part of the Integrated Vehicle-Based Safety Systems program. These findings are the result of analyses performed by the University of Michigan Transportation Research Institute to examine the effects of a prototype integrated crash warning system on drivi
...
United States. Department of Transportation. Road Weather Management
2011-01-01
|
PDF
Adverse weather can change a routinetrip to a life-changing event. Rain, snow,ice, and the like are partly or fully responsiblefor more than 1.5 million highwaycrashes, more than 600,000 injuries,and 7,000 fatalities on U.S. roads everyyear. Adverse weather is also the secondleading cause of nonrecurring highwaycongestion, accounting for about25 pe
...
On February 23–24, 2011, Federal agencies from the UnitedStates, Canada, and Mexico sponsored a workshop in SanDiego, California, to discuss opportunities for improvementregarding the greening of transportation at the borders.1The workshop, which approximately 130 people attended,focused on the following four border transportation themes:• Sustaina
...
United States. Department of Transportation. Federal Highway Administration
2011-01-01
|
PDF
The Federal Highway Administration (FHWA) Research Library furnishes collections and maintains research reports, electronic resources, and services in support of the research needs of FHWA staff. The library supports the ongoing research, development, and technology mission of investigating new highway technologies and transferring those research r
...
The use of native plants in roadside revegetation has evolved as more and more resource management agencies prescribe the practice as a much better approach for ecosystems. However, this practice is not widely used by state and local agencies that are responsible for building a majority of the roads. The goals and priorities of those responsible to
...
RFID technology was proven to be successful in tracking dump trucks from loading plant to a paver location on a highway project. The average roundtrip time was 1 hour and 4 minutes. However, 3% of this data has truck delivery times in excess of 2 hours, with two trucks more than 5 hours roundtrip time. There were approximately 16% data errors in ze
...
The purpose of this document is to present the findings of the national evaluation of the I-95 Corridor Coalition’s Airport Ground Transport Travel Information project, one element of the I-95 Test Bed conducted under the USDOT’s SafeTrip-21 Initiative. The Airport Ground Transport Travel Information Project is a system which was designed to provid
...
With funding and support from the USDOT RITA IntelliDrive(SM) initiative and direction from the FHWA Road Weather Management Program, NCAR enhanced QCh algorithms that are a part of the current Clarus System. Moreover, NCAR developed new QCh algorithms to extend the capabilities of the current Clarus System. This document highlights the current sta
...
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.
Through the U.S. Department of Transportation’s (USDOT) SafeTrip-21 initiative, the USDOT is testing a variety of technologies in a number of locations in California as well as along the I-95 corridor on the east coast. This document presents the evaluation findings, resulting primarily from in-person interviews the Evaluation Team conducted with i
...
United States. Federal Highway Administration. Office of Pavement Technology
2010-12-01
|
PDF
Current practices for asphalt mix design and acceptance testing rely on volumetric properties. Vital to the calculation of mix volumetric properties are specific gravity measurements of the mixture and the aggregate in the mixture. In essence, the specific gravity measurements are conversion factors which allow conversion of mass percentages to vol
...
United States. Federal Highway Administration. Office of Pavement Technology
2010-12-01
|
PDF
The Superpave mix design procedure features the Superpave gyratory compactor (SGC) for compacting specimens of hot mix asphalt. The primary operating parameters for the SGC include the pressure applied to the specimen during compaction; the speed of gyration/rotation; the number of gyrations applied to the specimen; and the angle of gyration. Value
...
This report presents the results for the national evaluation of the FY 2003 Earmarked ITS Integration Project: Southern Wyoming, I-80 Dynamic Message Signs. The I-80 Dynamic Message Signs project is a rural infrastructure deployment of ITS devices that were integrated with existing WYDOT transportation management systems. The devices include DMS, s
...
The purpose of this toolkit is to elaborate upon the recent changes in ridesharing, introduce the wide variety that exists in ridesharing programs today, and the developments in technology and funding availability that create greater incentives for people to abandon single occupant vehicles in favor of a shared ride. The intended audience is public
...
Links with this icon indicate that you are leaving a Bureau of Transportation
Statistics (BTS)/National Transportation Library (NTL)
Web-based service.
Thank you for visiting.
You are about to access a non-government link outside of
the U.S. Department of Transportation's National
Transportation Library.
Please note: While links to Web sites outside of DOT are
offered for your convenience, when you exit DOT Web sites,
Federal privacy policy and Section 508 of the Rehabilitation
Act (accessibility requirements) no longer apply. In
addition, DOT does not attest to the accuracy, relevance,
timeliness or completeness of information provided by linked
sites. Linking to a Web site does not constitute an
endorsement by DOT of the sponsors of the site or the
products presented on the site. For more information, please
view DOT's Web site linking policy.
To get back to the page you were previously viewing, click
your Cancel button.