Ontario MTO Truck Knowledge Practice Test

What do a vehicle's rear wheels not have the ability to do?

1. Brake suddenly

2. Pivot

3. Spin around

4. Accelerate rapidly

The correct answer is: Pivot

The rear wheels of a vehicle are not designed to pivot. Pivoting generally refers to the ability to rotate around a central point, which is something that the rear wheels cannot do in the same way that, for instance, the front wheels can, especially in vehicles designed for tight turns or when maneuvering in small spaces. The front wheels are primarily responsible for steering and changing the direction of the vehicle. They provide the capability to pivot when turning because they are connected to the steering mechanism. In contrast, the rear wheels are aligned in a fixed manner, mainly providing support for the vehicle's weight and aiding in the propulsion and stability of the vehicle. While rear wheels can brake, spin, and contribute to acceleration, they lack the pivoting ability that is essential for steering and maneuvering, which is typically managed by the front wheels.