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Front #131

ABTH 103.2

How long must the engineer pause in Idle when transitioning from power to dynamic braking?

  1. 2 seconds
  2. 10 seconds
  3. 3 seconds
  4. 5 seconds
Back #131
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ABTH 103.2


Answer: 10 seconds
Feedback:
This 10 second pause occurs with the throttle in Idle. The pause allows for electrical current decay and prevents a surge of dynamic braking. A surge in dynamic braking results in high buff forces which can cause damage to track structure or derailment.