Texas CDL General Knowledge Practice Exam

Which of these is true about rear wheel braking skids?

1. On vehicles with trailers, the trailers can push the towing vehicle sideways.

2. Rear wheel skids are easier to control than front wheel skids

3. ABS can worsen rear wheel skids

4. Rear wheel skids are not common in heavy vehicles

The correct answer is: On vehicles with trailers, the trailers can push the towing vehicle sideways.

The statement regarding rear wheel braking skids is accurate in emphasizing that on vehicles with trailers, the trailers can indeed push the towing vehicle sideways. This phenomenon occurs because when the rear wheels of the towing vehicle lose traction, the trailer, which is connected at the rear, may exert lateral force on the vehicle. This sideways movement can lead to a dangerous situation, especially in situations where quick corrections are necessary. In essence, when the rear wheels are skidding, the vehicle's stability is compromised, and the added weight and inertia of the trailer can contribute to further instability. This effect can be exacerbated on slippery surfaces where traction is minimal, allowing the trailer to push the towing vehicle in unintended directions. Understanding this dynamic is crucial for safe towing practices and maintaining control, especially in adverse conditions.