U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
|Accelerating Infrastructure Innovations|
Publication Number: FHWA-HRT-07-007
Date: October 2006
Since 1987, the Federal Highway Administration's (FHWA) Long-Term Pavement Performance (LTPP) program has collected and analyzed data across North America to better understand how and why pavements perform the way they do. This data analysis has resulted in a range of products and tools to meet today's pavement technology needs. The new LTPP Product List (Publication No. FHWA-HRT-06-119) outlines the many products available in such categories as Maintenance and Rehabilitation, Pavement Management Systems, and New and Reconstructed Pavements.
LTPPBind 3.1, for example, is a Microsoft Windows®-based program that can help highway agencies select the most suitable and cost-effective SuperpaveTM asphalt binder performance grade (PG) for a particular site. The software features a database of high and low air temperatures for nearly 8,000 North American weather stations, enabling users to select the binder PG based on temperature conditions at the site, desired level of risk, and different levels of traffic loading and speed.
The Distress Identification Manual for the Long-Term Pavement Performance Program (Publication No. FHWA-RD-03-031), meanwhile, provides a consistent, uniform basis for collecting distress data. The manual contains a common language for describing cracks, potholes, rutting, spalling, and pavement distresses monitored by the LTPP program. It features photographs and text that clearly label, describe, and illustrate each type of distress. Many States have adopted the procedures established in the manual.
Users around the world can access the LTPP data through the LTPP Standard Data Release, which makes the world's largest pavement performance database available annually in Microsoft Access® format as a five-CD set or on a single DVD. Data can also be obtained through DataPave Online (www.datapave.com), a user-friendly application that includes inventory, materials testing, pavement performance monitoring, climate, traffic, maintenance, rehabilitation, and seasonal testing data from the more than 2, 500 LTPP pavement test sections throughout North America.
For more information on LTPP products or a copy of the 2006 Product List, visit www.fhwa.dot.gov/pavement/ltpp/index.cfm (look under "Publications" for the Product List). The Distress Identification Manual is available at www.fhwa.dot.gov/pavement/ltpp/resource.cfm. To learn more or for information on obtaining LTPPBind 3.1, contact the LTPP Customer Support Service Center, 202-493-3035 (email: email@example.com).
The LTPP program's data analysis has resulted in a range of products and tools to meet today's pavement technology needs.