Air Brake Coach
System failuresQuestion 53 of 116

Is it acceptable to block off an air line to a failed part and keep driving?

  1. Yes, if you drive slowly
  2. No. This reduces braking capacity and is never acceptable
  3. Yes, if you use only the trailer brakes
  4. Yes, for one trip
Show answer

Correct answer: No. This reduces braking capacity and is never acceptable

If a failure affects braking, the vehicle stays out of service until it is repaired.

Source: Air Brake Manual: A Guide for Instructors (Government of Alberta, Alberta Transportation, March/April 2012), Module 10: Vehicle inspections, page 105

Practice system failures

Questions last reviewed: 18 October 2026