Introduction to Sign Retroreflectivity
Purpose of Traffic Signs and Importance of Maintaining Them
The Manual on Uniform Traffic Control Devices (MUTCD) published by the U.S. Department of Transportation – Federal Highway Administration, sets forth basic principles of traffic signs: namely to promote safety and efficiency on our public roads. Traffic signs notify motorists of regulations, provide warning to potential hazards on or near the roadway, and provide needed guidance to destinations.
Public agencies who have installed traffic signs also have the responsibility to maintain them through the life of the sign. Public agency should devote resources to retain the visibility and legibility of traffic signs, as well as ensuring that signs remain properly mounted and in good working condition.