Analysis effect of roadway width on skid resistance of porous pavement

The purpose of this document is to provide Federal Highway Administration (FHWA) guidance for the applying 23 CFR 772 in the analysis and abatement of highway traffic noise. Following this guidance is strictly voluntary. It is based on lessons learned and best practices and does not constitute the establishment of an FHWA standard. Not all studies are the same; therefore this guidance is intended to be non‐prescriptive, and its application flexible and scalable to the type and complexity of the analysis to be undertaken