How often should railway switches be inspected?

Railway switches are critical components in the rail system, connecting tracks and directing trains along different routes. Regular inspections of these switches are essential to ensure they function properly and safely. The correct answer emphasizes the importance of following a maintenance schedule, which typically dictates the frequency of inspections. By adhering to this schedule, rail operators can identify and address potential issues before they lead to malfunctions, minimizing the risk of accidents and delays.

Additionally, inspecting switches after extreme weather conditions is integral because severe weather can lead to damage or malfunction, impacting safety and operational efficiency. This proactive approach to maintenance not only improves the reliability of the rail system but also helps maintain the safety of both passengers and freight.

In contrast to this correct approach, other options suggest a less proactive maintenance strategy, such as only inspecting after serious malfunctions or on a fixed annual basis, which may not adequately address the ongoing wear and tear or unexpected environmental impacts on the equipment. Regular maintenance and timely inspections ensure optimal performance and safety of railway operations.