U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
202-366-4000
Federal Highway Administration Research and Technology
Coordinating, Developing, and Delivering Highway Transportation Innovations
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| This report is an archived publication and may contain dated technical, contact, and link information |
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Publication Number: FHWA-RD-00-113 Date: June 2000 |
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High quality pavement profile data are important to both the LTPP research, and highway agency pavement management systems. This report documents a study conducted to evaluate the quality and variability of the longitudinal profile data in the Long Term Pavement Performance (LTPP) database. The study focuses on LTPP profiles collected between June 1989 and October 1997. These profiles were visually reviewed for saturation spikes, lost lock, shifted starts, wrong location, out of study and other equipment–and–operator–related problems. Noted problems are identified in the report. Repair, replacement, or deletion of these files was completed in conjunction with this study. Remaining or replaced good profile data were used for analysis of variability.
T. Paul Teng, P.E.
Director
Office of Infrastructure
Research and Development
