Home › CDL Practice Tests › Combination Vehicles Questions › Question 200
You couple to an older trailer that was built before ABS was required on trailers. How should that change your driving?
- A.No change is needed; older trailers brake the same as ABS trailers
- B.Brake earlier and more gently, because its wheels can lock more easily, especially when the trailer is empty or the road is wet
- C.You may follow traffic more closely because the brakes are simpler
- D.Use the hand valve for all stops to protect the old brakes
Correct answer
B. Brake earlier and more gently, because its wheels can lock more easily, especially when the trailer is empty or the road is wet
Why
Plenty of pre-ABS trailers remain in service, and they demand the older skills: anticipating stops and modulating pressure so the trailer wheels never lock. Knowing what equipment you are pulling is part of the job.
Manual topic: Combination Vehicles - Trailer ABS · From the Combination Vehicles practice bank (CV-200).