Retroreflectivity Maintenance
Blanket Replacement Method
In this method, an agency replaces all the signs in an area/corridor, or of a given type, at specified intervals. An agency that uses this method does not need to track the age or assess the retroreflectivity of individual signs. The following factors provide additional information about the use of this procedure:
- Replacement zones can be based on an area, corridor, or sign type.
- The replacement interval for the area/corridor, or sign type, is based on the expected sign life for the affected signs.
- All signs within a replacement area/corridor/type are typically replaced, even if the sign was recently installed.