Air Brake Coach
Spring brakesQuestion 23 of 116

What releases the spring park brakes?

  1. The caging bolts
  2. The foot valve spring
  3. The compressor belt
  4. Air pressure from the service tanks
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Correct answer: Air pressure from the service tanks

The system uses air from the service tanks to release the park brake.

Source: Air Brake Manual: A Guide for Instructors (Government of Alberta, Alberta Transportation, March/April 2012), Module 5: Park circuit, page 56

Practice spring brakes

Questions last reviewed: 18 October 2026