Description

This practice describes procedures to assess the accuracy and precision of the transverse pavement profiler (TPP) under typical dynamic operation. The particular specifications which will be assessed are: transverse measurement spacing, effective transverse width, longitudinal measurement spacing, and vertical measurement error.

In addition to the TPP specifications, the TPP will be evaluated on the following deformation parameters: rut depth, cross slope, vertical magnitude of an edge/curb, and transverse location of an edge/curb. Evaluations will be performed by comparing the resulting TPP deformation parameters to ones calculated from ground reference data conforming to AASHTO PP 110.

The minimum requirements stipulated herein are intended to focus on the need for accurate and repeatable transverse measurements for network and project-level data collection.

This standard practice is intended to be conducted in conjunction with three other standard practices to fully assess and certify the TPP in typical operating conditions. For static assessment see AASHTO PP 106; for body motion assessment, see AASHTO PP 107; and for assessment of drift mitigation, see AASHTO PP 108.