AASHTO R 87-18 (2022)

This practice outlines a method for deriving pavement deformation parameters such as rut depth and cross slope in pavement surfaces utilizing a transverse profile. Detailed specifications are not included for equipment or software used to make the calculations. According to this standard, any approach that can be adequately validated to meet the functionality stipulated herein is considered acceptable. The goal is to achieve a significant level of standardization that will contribute to the production of consistent pavement condition estimates without unduly restricting innovative methods.

The data will typically be processed utilizing a collection of algorithms in a computer.

This standard practice was formerly designated as AASHTO Provisional Standard Practice PP 69.