Air Brake Coach
Spring brakesQuestion 22 of 116

At what pressure are the park springs applied firmly?

  1. 45 to 50 PSI
  2. 82 to 84 PSI
  3. 65 to 70 PSI
  4. 120 PSI
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Correct answer: 45 to 50 PSI

The park springs are applied firmly by 45 to 50 PSI (310 to 345 kPa).

Source: Air Brake Manual: A Guide for Instructors (Government of Alberta, Alberta Transportation, March/April 2012), Module 5: Park circuit, page 58

Practice spring brakes

Questions last reviewed: 18 October 2026