What is a Route in signaling and how is it established?

• A. A set of signal indications and track permissions that guide trains along a determined path; established by signal control logic and operator authority.
• B. A path chosen by the maintenance crew randomly.
• C. A route that is fixed and cannot be changed.
• D. A path determined by weather conditions.

Answer: (A)

A Route in signaling is the controlled, protected path that a train is allowed to follow from a starting point to a destination, defined by a set of signal indications and track permissions along specific tracks and switches. This path is established by the signaling system’s control logic and the authority of the dispatcher or operator who selects and assigns the route. Once set, interlocking coordinates and locks the necessary switches and ensures the corresponding signal aspects are shown, so the train can proceed safely while preventing conflicting movements. The route remains active until the train passes the last signal or the route is cleared or cancelled.

The other ideas don’t fit because routes aren’t chosen randomly by maintenance, aren’t fixed and unchangeable, and aren’t determined by weather. Instead, a route is a deliberate, coordinated path created through control logic and authorized by the dispatcher, with safety protections provided by interlocking.