Which steps determine if a route through an interlocking is cleared?

• A. Inspect brakes.
• B. Verify the route indication is active, interlocking shows locked settings, and dispatcher has cleared the route.
• C. Check timetable for the next stop.
• D. Ask the conductor to confirm.

Answer: (B)

To determine if a route through an interlocking is cleared, you must verify three things: the route indication is active, the interlocking shows locked settings, and the dispatcher has cleared the route.

The route indication being active means the signaling system is showing that the chosen path is set and ready for train movement. If the indication isn’t active, the route isn’t officially open yet.

The interlocking showing locked settings confirms that the route, including points and signals, is secured and cannot be changed mid-operation. This prevents conflicting movements and ensures the route remains consistent as trains proceed.

Dispatcher clearance provides formal authorization that the route is reserved and approved to proceed, coordinating traffic with other movements and preventing conflicts on the tracks.

Why the other options don’t fit: inspecting brakes is about the train’s readiness, not the routing through a junction; checking the timetable for the next stop relates to schedule, not safety clearance; and asking the conductor to confirm isn’t the formal authorization needed for route clearance.