Class 7 Coach
Road signsQuestion 147 of 235
Black square sign with a white curved arrow to the left

A square sign has a white message on a black background. What type of sign is it?

  1. A construction sign.
  2. A warning sign.
  3. A service sign.
  4. A lane control sign.
Show answer

Correct answer: A lane control sign.

White words or symbols on a black square control how drivers use a lane.

Source: Driver’s Guide: Cars and Light Trucks (Government of Alberta, Spring 2026), Sign shapes and colours, page 27

Practice road signs

Questions last reviewed: 18 October 2026