Accuracy and Precision Assessment of High-Speed Measurements of Pavement Surface Cracking

摘要

This paper presents an independent evaluation of the accuracy and precision of highspeed field measurements of pavement surface distresses taken by three different 3D systems that represent the state-of-the-practice of automated distress collection equipment. The analyzed distress data was collected from a field experiment that comprised twenty 550-ft test sections that included both flexible and rigid pavements. The high-speed measurements produced were compared to manual measurements taken statically by experienced raters. The paper also presents a qualitative comparison between the crack maps produced at highway speeds and digital crack maps collected statically by manual measurement of the cracks. In addition, before-and-after analyses were conducted to assess for the change in accuracy achieved after conducting a visual inspection, and manual corrections, of the automated measurements.