Question

If the brakes go into emergency from an unknown cause, the train operator should immediately lap his brake handle to ________.

1) 19
2) 20
3) 21
4) 99

Answer 1

The train operator should lap the brake handle to 20 if the brakes go into emergency unexpectedly to stabilize the brake system.

Step-by-step explanation:

If the brakes on a train go into emergency from an unknown cause, the train operator should immediately lap his brake handle to 20.

This procedure can help to stabilize the brake system and prevent further uncontrolled application of the brakes, which can be critical to ensuring the safety of the train and its passengers.

Lapping the brake handle involves holding the handle in a position that neither applies nor releases the brakes, effectively 'lapping' the brakes and maintaining the existing brake pipe pressure. This action can be an essential emergency response tactic for train operators facing unexpected braking issues.