Which term refers to a location used to coordinate interlocking operations and signals?

• A. Block-Limit Station
• B. Bulletin Notice (BN)
• C. Interlocking Station
• D. Block Station

Answer: (C)

The main idea is that coordinating interlocking operations and signals happens at a dedicated location known as the interlocking station. This is the control point where signaling equipment, switches, and routes are managed so that signals and track switches can’t create unsafe, conflicting movements. Historically this was a signal box and now it can be a modern control room, but the key concept remains: the place that houses and oversees the interlocking logic is the interlocking station.

Block-Limit Station refers to the boundaries of a block section, not the control point for interlockings. Bulletin Notice is a communication document about restrictions, not a control location. Block Station isn’t a standard term for the place that coordinates interlocking operations.