Variability of pavement distress data from manual surveys
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Variability of pavement distress data from manual surveys

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    NTL-HIGHWAY/ROAD TRANSPORTATION-Pavement Management and Performance
  • Abstract:
    Several measures have been carried out in the Long Term Pavement Performance (LTPP) Program to ensure uniform distress data collection and interpretation. However, no systematic evaluation has been done to quantify the variability (bias and precision) associated with both the manual and film-derived pavement distress data. In view of this, a study was undertaken to assess the variability of the LTPP distress data, consisting of the assessment of manual distress data variability, assessment of film-derived distress data variability, and assessment of the agreement between manual distress data and film-derived distress data. This TechBrief summarizes findings from the full report related to variability in manually collected pavement distress data. 4 p.
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