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Front #8
ABTH 103.6.3A
Dynamic braking and air brakes are being used to slow for a permanent speed restriction. The slack is bunched on a level grade and the engineer has just released the air brakes. The engineer should maintain enough dynamic braking to keep the slack bunched until _____.
Air brakes release on the first half of the train
Air brakes release on the head end locomotive consist
Answer: Air brakes release throughout the trainFeedback: If the dynamic brakes are reduced before the air brakes release throughout the train, a run-out on the head end of the train is likely. The locomotives and head end of the train will start picking up speed, while cars near the rear end will not because the air brakes have not fully released.