ASTMD6433 details a standard practice for conducting pavement condition index (PCI) surveys of roads and parking lots. The practice outlines procedures for dividing pavement areas into sections and sample units, visually assessing distress types and severities, and calculating PCI values. These values, ranging from 0 (worst) to 100 (best), provide an objective measure of pavement condition, informing maintenance and repair priorities. Statistical sampling methods are employed to ensure data reliability. Finally, the document includes detailed appendices specifying distress types and their measurement for both asphalt and concrete pavements.

https://www.astm.org/d6433-20.html