Home › CDL Practice Tests › Combination Vehicles Questions › Question 153
In an emergency, why is it better to brake in a straight line when possible rather than while swerving?
- A.Braking while swerving is illegal for combination vehicles
- B.The trailer brakes do not work unless the combination is straight
- C.Swerving automatically applies the spring brakes
- D.Straight-line braking keeps all tires working on slowing the vehicle instead of splitting grip between turning and stopping
Correct answer
D. Straight-line braking keeps all tires working on slowing the vehicle instead of splitting grip between turning and stopping
Why
Tire grip is a shared budget between cornering and braking. Using it all for braking in a straight line stops you shortest and keeps the trailer from being swung by steering forces at the same time.
Manual topic: Combination Vehicles - Skids and Jackknifing · From the Combination Vehicles practice bank (CV-153).