Which mechanism provides feedback on the current status of the signal light?

The signal indication light serves as a vital mechanism for providing feedback on the current status of the signal light. When a signal indication light is illuminated, it clearly communicates to the tower operator whether the signal is clear, stop, or other states as defined by the signal's design. This clear visual feedback is essential for ensuring that operators can make informed decisions about train movements, maintaining safety and efficiency in operations.

Signal indication lights are strategically positioned to be easily visible to operators, allowing them to quickly assess the state of the signaling system without ambiguity. This immediate feedback is crucial in a high-paced environment such as a train control center, where timely and accurate information directly affects the safety of operations.