Data collection and management are core functions of the Federal Highway Administration Long-Term Pavement Performance (FHWA-LTPP) program. They are also a shared function between FHWA-LTPP and the States and Provinces. To coordinate these activities, LTPP maintains four regional offices: North Atlantic, North Central, Southern, and Western.
The Long-Term Pavement Performance (LTPP) program makes the world’s largest pavement performance database available annually to the public in Microsoft Access® format and available on thumb drive or DVD-ROM. The Standard Data Release (SDR) may be obtained through LTPP Customer Support Services at
Perhaps one of the most useful documents contained here for beginners is the tutorial "Accessing LTPP Data," which includes step-by-step examples of working with the SDR in MS Access and building queries for data extraction. The first document to read is the "Release Notes," which comes in hardcopy and electronic format with the SDR. These notes contain important information about organization, content, and significant changes that have occurred from release to release.
A Reference Library section accompanies the Standard Data Release and gives the user the capability to search for software utilities, resource documents, and research reports that support the database.
DataPave Online (available at www.ltpp-products.com) is the latest effort to expand access to the LTPP pavement performance data while providing a user-friendly graphical interface. The data provided in DataPave online are the same as that delivered with the new Standard Data Release, described above. However, data updates on the Web site may lag somewhat behind the Standard Data Release as data are transferred between the two media. Questions pertaining to data should be forwarded to LTPP Customer Support Service Center at email@example.com, while questions pertaining to the operation or performance of the Web site should be forwarded to Antonio Nieves Torres at FHWA,firstname.lastname@example.org.
Some data are not stored in the pavement performance database and not included with the Standard Data Release, typically because of intensive storage memory requirements. Point-by-point road profile, Falling Weight Deflectometer (FWD) time-history waveforms, distress map data, and raw traffic data are a few examples. However, this data may still be requested through a custom data extraction. While requests may be filled free-of-cost, limitations will exist based on the level of effort required to fulfill the request. These requests are assessed case-by-case. To request ancillary data and information, please contact the LTPP Customer Support Service Center at email@example.com, or by calling (202) 493-3035, or by faxing (202) 493-3161.
Customer Feedback can be submitted to LTPP Customer Support Service by using a Data Analysis/Operations Feedback Report, a mechanism used to report any problems or suspicions about the data. LTPP investigates the report, and investigation results are posted on the LTPP Web site at http://www.fhwa.dot.gov/pavement/ltpp/feedback.cfm.
In an effort to serve our customers better, we invite you to complete a brief questionnaire. Please take a few minutes to answer each question that applies to the service you received on your request(s) for customer support.
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