What should you do if an obstruction is detected on the main track or controlled siding?

When an obstruction is detected on the main track or controlled siding, warning other trains by radio is crucial for maintaining safety on the railway. This action ensures that nearby trains are informed of the hazard, allowing them to take necessary precautions to avoid an accident. Communication is key in a railway environment, as it enables coordination and helps prevent potential collisions, derailments, or other dangerous situations.

While alerting passengers, notifying maintenance crews, or continuing at normal speed may seem important, they do not prioritize immediate safety in the same way. Alerting passengers can be beneficial but should happen after other trains are warned. Notifying the maintenance crew is necessary for resolving the obstruction, but again, it should follow the immediate action of warning other trains. Continuing at normal speed poses a significant risk to safety, making it an inappropriate response in this scenario.