What should a locomotive engineer do upon experiencing a mechanical failure?

Upon experiencing a mechanical failure, the appropriate action for a locomotive engineer is to follow emergency protocols and notify dispatch. This response is essential as it ensures the safety of everyone on board and any nearby individuals. By adhering to established emergency procedures, the engineer can assess the situation, determine the necessary steps for safety, and communicate promptly with dispatchers who can assist in coordinating an appropriate response. This could involve halting train operations, seeking assistance, or executing any necessary emergency measures.

Continuing to operate the train until the next station could exacerbate the situation and lead to more severe problems or even accidents. Performing immediate repairs is impractical and unsafe while a train is in full operation, as mechanical troubleshooting and repairs often require resources and environments not available at that moment. Replacing the locomotive is typically not a feasible option on the spot and would also disrupt train schedules significantly. Therefore, following emergency protocols is the correct approach to handling mechanical failures effectively and safely.