Recommended Accessories
Product Information
Compliance
Section 2D.17 ALTERNATE Auxiliary Signs
Option
- The ALTERNATE (M4-1) or the ALT (M4-1a) auxiliary sign may be used to indicate an officially designated alternate routing of a numbered route between two points on that route.
Guidance
- The shorter (time or distance) or better-constructed route should retain the regular route number, and the longer or worse-constructed route should be designated as the alternate route.
Source: 2009 MUTCD