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The Manual on Uniform Traffic Control Devices (MUTCD), which is published by the Federal Highway Administration (FHWA), defines the standards used by road managers nationwide to install and maintain traffic control devices on all streets and highways. In 2003, the FHWA released an updated edition. The most recent version of the MUTCD is available at: http://mutcd.fhwa.dot.gov. Although many States only use the MUTCD standards, some states use modifications of the standard.

Retroreflectivity

MUTCD 2003 Revision 2, which became effective in January 2008, adds new provisions regarding sign retroreflectivity to Section 2A.09 of the 2003 MUTCD, as well as a new Table 2A-3, Minimum Maintained Retroreflectivity Levels. Public agencies will have until January 22, 2012 to implement and then continue to use an assessment or management method that is designed to maintain traffic sign retroreflectivity at or above the minimum levels shown in the new Table 2A-3. Public agencies will have until January 22, 2015 to replace any regulatory, warning, or ground-mounted guide (except street name) signs that do not meet these minimum requirements and until January 22, 2018 to replace any street name signs and overhead guide signs that are out of compliance with the new standards. These new provisions and the new Table 2A-3 can be viewed at the FHWA's MUTCD website at: http://mutcd.fhwa.dot.gov.

MUTCD Resources