Ontario G1 Test Coach
Road signsQuestion 23 of 328
A yellow-green five-sided sign above a white sign with MAXIMUM 40 km/h WHEN FLASHING and two yellow lights

The yellow lights on this sign are flashing. What must you do?

  1. Obey the lower speed shown
  2. Obey the normal speed limit
  3. Stop until the lights stop
  4. Slow to half the speed shown
Show answer

Correct answer: Obey the lower speed shown

In school hours the limit here is lower. Follow the shown number while the lights flash.

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

Practice road signs

Questions last reviewed: 18 October 2026