What is the requirement for appliances used to give and display signals?

The requirement for appliances used to give and display signals being "in good condition and ready to use" is essential for safe operations in a railway environment. This ensures that all signaling devices function properly and effectively convey the necessary information to train crews. If the signaling devices are not maintained in good condition or are not operational, it could lead to misunderstandings or failures in communication regarding train movements, which could result in accidents or operational delays.

Maintaining signaling devices in good condition encompasses regular inspections and timely repairs, thereby reinforcing the vital role these appliances play in safety protocols. While visibility and material construction can influence signal effectiveness, the primary focus is on the functionality of the devices to ensure they serve their purpose reliably and without fail.