Maintaining Traffic Sign Retroreflectivity: Impacts on State and Local Agencies) is a new publication issued April 2007 by the Federal Highway Administration. This report updates a 1998 report on the national impact of minimum maintained traffic sign retroreflectivity levels and addresses concerns expressed in four FHWA-sponsored workshops that were held in 2002.
A new retroreflective sheeting identification guide is now available at the following internet address: click here
