Practice question

What is the purpose of ABS on an air-brake vehicle?

To help prevent wheel lockup during hard braking
To shorten every stop on every surface
To replace the service brakes
To build air pressure faster

Answer: A — To help prevent wheel lockup during hard braking

The correct answer is shown above. Try the full quiz for additional practice.

Practice more: Minnesota CDL Air Brakes Test Practice Questions - Minnesota Commercial Driver License (CDL) Air Brakes Knowledge Test Exam →