Back #111
ABTH 102.1.2
Answer: - Number required is unknown - Releasing the air brakes to test for sufficient hand brakes is not practical (such as when only the rear of train is being left unattended)
Feedback:Under many circumstances, the release test is a practical way to determine hand brakes are sufficient to secure. The chart showing the number of cars requiring hand brakes exists for situations where it is not practical to perform the release test to determine sufficient hand brakes.