What should a crew member do if signal indications go out of service?

When signal indications go out of service, the appropriate action is to follow the established protocol for such instances. This protocol typically outlines specific procedures that a crew member must adhere to in order to ensure safety and maintain operations despite the absence of signal indications.

This approach is important because standardized protocols are developed to address potential safety hazards associated with signal failures. These protocols may involve guidelines on coordinating with dispatch, verifying train positions, and adjusting operations to ensure the safety of the train, passengers, and crew.

By strictly following the established procedures, crew members can effectively minimize risks while maintaining communication and operational integrity, all of which are critical in situations where normal signals are not available. This is a crucial aspect of training and adherence to the operating rules, ensuring that crew members are equipped to deal with unexpected situations safely and efficiently.