AASHTO R 54-14 (2018) PDF Download

AASHTO R 54-14 (2018) is a standard that provides guidance and example specification language for Owner-Agencies in developing contract requirements for measuring and evaluating pavement ride quality using inertial profiling systems (IPS) and International Roughness Index (IRI) as the quality measure.

The standard is intended to assist in the development of specific contract language that will ensure consistent and accurate measurement and evaluation of pavement ride quality. It provides guidance on the use of IPS and IRI, which are commonly used tools for measuring pavement smoothness and ride quality.

The standard emphasizes the importance of properly calibrating and maintaining the IPS equipment to ensure accurate and reliable measurements. It also provides guidelines for determining acceptance criteria based on the measured IRI values.