Practice question

Failing to drain the tanks in an air brake system can result in:

  1. Water freezing and causing brake failure.
  2. Squishy brakes.
  3. Too much air collecting.
  4. Too much fuel being carried.

Answer: A — Water freezing and causing brake failure.

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

Practice more: Texas CDL Class B Knowledge Test 1 →