ABSTRACT
Experiments, accompanied by all the analyses and pavement condition evaluations presented in this chapter, are based on the pavement performance measures. A common acceptable pavement performance measure is the Pavement Condition Index (PCI), which was first defined by the US Army. In the PCI, the pavement condition is related to factors such as structural integrity, structural capacity, roughness, skid resistance, and rate of distress. These factors are quantified in the evaluation worksheet that field inspectors use to assess and express the local pavement condition and damage severity. Mostly, inspectors use their own judgment to assess the distress condition. Usually, the PCI is quantified into seven levels, corresponding from Excellent (over 85) to Failed 0. Thus, PCI is an important index for maintenance and repair determination in which the overall conditions of the observed road surface are evaluated.
