In subway sections, what does a clear signal indicate?

In subway operations, a clear signal is an essential communication tool that indicates to train operators that the track ahead is clear and safe for movement. This is primarily represented by a green light or lantern. When a train operator sees a green signal, it means they can proceed without restrictions, ensuring that the train can continue its journey at a normal speed, provided they keep other safety protocols in mind.

It's vital for train operators to recognize and respond appropriately to these signals to maintain safety and efficiency in the transit system. The green light is used across various train systems as a universal signal for 'go,' helping train operators make real-time decisions about their movement on the tracks.