Speed and stoppingQuestion 125 of 235
Which vehicles show a slow-moving vehicle sign on the back?
- Vehicles that go slower than 40 km/h, such as farm tractors.
- Vehicles that go slower than 70 km/h, such as buses.
- Vehicles that carry a wide load on a highway.
- Vehicles that stop at every railway crossing.
Show answer
Correct answer: Vehicles that go slower than 40 km/h, such as farm tractors.
Farm tractors and slow machines show this sign. It tells you to be ready to reduce your speed.
Source: Driver’s Guide: Cars and Light Trucks (Government of Alberta, Spring 2026), Other signs, page 39
Practice speed and stoppingQuestions last reviewed: 18 October 2026