Study of LTPP distress data variability /
Reliable distress data for pavement performance model development and validation, and other pavement engineering products, are critical to the success of the Long-Term Pavement Performance (LTPP) program. Confidence in distress data requires a measure of error because of the bias and precision compo...
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| Format: | Government Document eBook |
| Language: | English |
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McLean, VA :
U.S. Department Transportation, Federal Highway Administration, Research, Development, and Technology, Turner-Fairbank Highway Research Center,
September 1999.
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| Online Access: | https://purl.fdlp.gov/GPO/gpo92301 |
| Summary: | Reliable distress data for pavement performance model development and validation, and other pavement engineering products, are critical to the success of the Long-Term Pavement Performance (LTPP) program. Confidence in distress data requires a measure of error because of the bias and precision components of its variability. No systematic evaluation has been performed to quantify the bias and variability associated with both the manual and PASCO film-based distress data. In view of this, this study was undertaken by the Federal Highway Administration (FHWA) to assess the variability of the LTPP distress data, including those in the Information Management System (IMS) and those currently being collected using either photographic or manual methods. |
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| Item Description: | "September 1999." "Performing organization: Law PCS, a division of LAW Engineering and Environmental Services, Inc."--Report documentation page. "Contracting officer's rechnical representative - Monte Symons"--Report documentation page. "Publication no. FHWA-RD-99-074." "Publication no. FHWA-RD-99-075." |
| Physical Description: | 1 online resource (2 volumes) : illustrations |
| Bibliography: | Includes bibliographical references (volume 1, page 137). |