Maintenance QA Program Implementation Manual
NCHRP Report 422
Year Published: 1999
External Link: http://onlinepubs.trb.org/onlinepubs/nchrp/nchrp_rpt_422.pdf
This document provides guidance to state transportation agencies for establishing a highway maintenance quality assurance (QA) program, including for the maintenance of levels of service. It synthesizes prior research on QA programs to establish a new standard specifically for highway maintenance.