What action should be taken if the dynamic brake light does not go out after reducing the brake handle position?

When the dynamic brake light does not go out after reducing the brake handle position, cutting out the dynamic brake on the affected unit is the appropriate action. This indicates that there may be an issue with the dynamic braking system, such as a malfunction or a failure to disengage. By cutting out this system, you can prevent any further complications from occurring while ensuring the train can continue to operate safely.

Cutting out the dynamic brake helps isolate the problem and allows the train to rely on other braking systems until the issue is resolved. This step is crucial for maintaining control and safety during operations, particularly in situations that may require immediate braking response. Other options may lead to continuing reliance on a faulty system, which can compromise the overall safety and performance of the train.