Ontario G1 Test Coach
Road signsQuestion 56 of 328
A white sign with an orange band Emergency Detour Route, a green highway marker, the word Via and a circle EDR

When are Emergency Detour Route signs used?

  1. When a crash leaves one lane open
  2. When workers repaint the lines on a road
  3. When police close a provincial highway and detour all traffic
  4. When a road has a lower speed limit
Show answer

Correct answer: When police close a provincial highway and detour all traffic

Follow the EDR markers. They lead you around the closed highway and back to it.

Source: The Official MTO Driver's Handbook (Ontario Ministry of Transportation), Signs, Here are some other common signs:

Practice road signs

Questions last reviewed: 18 October 2026