Information & Direction Signs
Emergency Detour Route Sign
An emergency detour route directs drivers around an unscheduled highway closure.
What to Do
Follow the EDR markers to return to the highway beyond the closure.
A Detail to Remember
EDR means Emergency Detour Route. It is distinct from a routine construction detour such as route D-1.
Understanding Information & Direction Signs
Direction and service signs help with navigation. Arrows and supplementary wording explain where to go; these signs do not replace traffic signals, lane rules or right-of-way requirements.
Sources and Review
Checked November 12, 2026. Explanations follow the sources below; image-specific observations refer to the pictured G1 Prep artwork.
Sign artwork: G1 Prep by Roadity. See our editorial policy.
