What is the main safety benefit of trailer ABS for a combination vehicle?

• A.It guarantees a shorter stopping distance on every surface
• B.It replaces the need for the trailer service brakes
• C.It helps keep trailer wheels from locking, which reduces the chance of a trailer skid and jackknife and helps the driver keep control while braking hard
• D.It allows the driver to brake in curves at full pressure

Why

ABS earns its keep by keeping wheels rolling, and rolling wheels keep side grip, which is what stops a trailer from swinging. On some surfaces stopping distance may not shrink, but control is the real gain.

Manual topic: Combination Vehicles - Trailer ABS · From the Combination Vehicles practice bank (CV-199).

Practice this subject as a full test

More Trailer ABS & Brake Checks questions

• What should the trailer ABS malfunction lamp do when you first power up / start the vehicle, if the system is healthy?
• The yellow ABS lamp for the trailer stays on after you are moving. What does it mean and what still works?
• Where is the ABS malfunction lamp for the trailer itself commonly mounted (in addition to any dash lamp)?
• You couple to an older trailer that was built before ABS was required on trailers. How should that change your driving?
• During the applied-pressure leak test, what maximum air loss in one minute is allowed for a combination vehicle with the engine off and brakes applied?