Practice question

For a combination vehicle with brakes applied, what applied leakage rate is normally allowed?

  1. No more than 4 psi in one minute
  2. No more than 2 psi in ten minutes
  3. Exactly 45 psi in one minute
  4. Any loss if the trailer is loaded

Answer: A — No more than 4 psi in one minute

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 →