There are significant gaps in the understanding of pavement and bridge preservation and it will require a comprehensive and broadly supported program of research, development and technology transfer to fill those gaps. The FHWA has partnered with the American Association of State Highway Transportation Officials (AASHTO) and the preservation indust
...
This document provides an overview of the Federal Highway Administration's winter Maintenance Decision Support System (MDSS). The MDSS is a decision support tool that has the ability to provide weather predictions focused toward the road surface. These predictions are then merged with customized rules of practice that have been captured from mainte
...
Improving mobility on our Nation’s highways is the mission of the Federal Highway Administration (FHWA). During 2007, FHWA’s Long Term Pavement Performance (LTPP) program worked toward this mission through its efforts to provide answers to “how” and “why” pavements perform as they do. To better understand pavement performance, the LTPP program gath
...
United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology
2008-01-01
|
PDF
The Federal Highway Administration (FHWA) Office of Research, Development, and Technology (RD&T) is organized into 6 offices with 15 teams of experts in more than 30 transportation-related disciplines. Three research and development (R&D) offices - Operations, Safety, and Infrastructure - conduct R&D to continually improve highway operations and in
...
United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center
2008-01-01
|
PDF
This is a comprehensive listing of Turner-Fairbank Highway Research Center research documents published from October 2006 through September 2007, and includes listings of fact sheets, flyers, product briefs, reports, summaries, and TechBriefs.
United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center
2008-01-01
|
PDF
Any grade of phosphoric acid can be used as an asphalt modifier. The stiffening effect is asphalt dependent. All grades of acid will yield similar results. However, the more diluted grades contain water, which may result in foaming problems as the water boils when the acid is added to hot asphalt. The use of crude green acid is not recommended as i
...
This document is intended to provide decision makers with an objective appraisal of the physical conditions, operational performances, and financing mechanisms of highways, bridges, and transit systems based both on the current state of these systems and on the projected future state of these systems under a set of alternative future investment sce
...
This document is a summary of the 2008 Status of the Nation’s Highways, Bridges, and Transit: Conditions and Performance report to Congress (C&P report). The C&P report is intended to provide decision makers with an objective appraisal of the physical conditions, operational performance, and financing mechanisms of highway, bridge, and transit syst
...
Upholding the Public Trust - Is Your Construction Project a Victim of Crime? - Leap, Not Creep - Mobility Services for All - QuickZone: Modeling In the Zone - The Corporate Master Plan Shapes R&T Practice.
Alkali-aggregate reactions (AAR) occur between the alkali hydroxides in the pore solution of concrete and certain minerals found in some aggregates. Two types of AAR reaction are currently recognized depending on the nature of the reactive mineral; alkali-silica reaction (ASR) involves various types of reactive silica (SiO2) minerals and alkali-car
...
Speeds on low-speed urban arterials often exceed their intended operating speeds resulting in potential safety problems since speed is directly related to crash severity, especially for pedestrian-involved crashes. This research develops and calibrates a method for estimating operating speeds based on drivers' perceptions of design features, enviro
...
United States. Department of Transportation. Federal Highway Administration
2008-01-01
|
PDF
New York State is an ideal testing ground for identifying the institutional barriers to implementation of wireless E9-1-1 and exploring alternative strategies for addressing these barriers.
United States. Department of Transportation. Federal Highway Administration. Office of Operations
2008-01-01
|
PDF
When disaster strikes, America's transportation system is its lifeline. The transportation system conveys those at risk away from danger, and provides access to emergency response and recovery units. If your community is not actively planning to optimize the operation and coordination of its transportation system during natural disasters or nationa
...
United States. Department of Transportation. Federal Highway Administration
2008-01-01
|
PDF
Congratulations to the winners of the 2008 Excellence in Right-of-Way Awards and all who were nominated for these awards. This biennial awards program was developed by the Federal Highway Administration (FHWA) to honor those who excel in streamlining or improving the real property acquisition process while ensuring that property owners' and tenants
...
United States. Department of Transportation. Federal Highway Administration
2008-01-01
|
PDF
Since 1995, the Environmental Excellence Awards have recognized leaders across the country who make outstanding contributions to environmental stewardship and partnerships above and beyond traditional transportation project outcomes. The winning projects and programs exemplify FHWA's priorities of climate change and sustainability, equity and envir
...
United States. Department of Transportation. Federal Highway Administration
2008-01-01
|
PDF
Transportation agencies face many challenges today, including: Aging infrastructure. Increase in traffic volume with shrinking construction windows. Increase in construction cost infrastructure. Increase in work zone accidents and fatalities. We need to be able to build highways that are safer, longer lasting, and faster at a lower cost. Furthermor
...
United States. Department of Transportation. Federal Highway Administration
2008-01-01
|
PDF
The Federal Highway Administration's (FHWA) Research & Technology Leadership Team endorses four new priority, market-ready technologies and innovations (T&Is). This list continues to fulfill our Agency commitment established in the FHWA Corporate Master Plan for Research and Deployment of Technology & Innovation to identify market-ready T&Is.
United States. Department of Transportation. Federal Highway Administration
2008-01-01
|
PDF
The management of speed through appropriate speed limits is an essential element of highway safety. The Manual on Uniform Traffic Control Devices (MUTCD) recommends that speed limits be set within 8.05 km/h (5 mi/h) of the 85th percentile speed. The MUTCD also specifies other factors (e.g pedestrian activity and crash history) to consider but does
...
United States. Department of Transportation. Federal Highway Administration
2008-01-01
|
PDF
Some of these structures (595,000 bridges and over 300 highway tunnels) could easily be terrorist targets because they are easily accessible to all kinds of vehicles without screening or inspection and have high economic value. Preliminary studies indicate that there are approximately 1,000 bridges across the United States w here substantial casual
...
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.