When should extreme weather conditions be monitored for safety hazards?

Monitoring extreme weather conditions for safety hazards throughout all operational hours is crucial for ensuring the safety of passengers and crew. Weather can change rapidly, and hazards such as high winds, snow, ice, or heavy rain can significantly impact train operations, infrastructure, and the safety of tracks and stations. Continuously monitoring these conditions allows for timely communication of risks, proper planning, and the ability to take immediate action if necessary. This vigilance is essential to adjust schedules, implement safety protocols, and ensure that all personnel are aware of any potential dangers during their shifts, thus minimizing risk and enhancing safety for everyone involved in the operation.

The other options suggest a more limited approach to monitoring, which could leave gaps in safety awareness and response during critical times. Conducting checks only during maintenance or off-peak hours, or viewing weather conditions as a non-concern, would not provide the comprehensive oversight needed to manage safety hazards effectively throughout all operational periods.