Your engine and 5 cars are on a business track stopped at a Stop signal with part of the train on the main track. What action is required to pass the Stop signal and re-enter the CTC main track?

• A. Proceed across the Stop signal immediately.
• B. Use the main track switch as needed without restriction.
• C. Stop before entering the block; after that, you may proceed because the switch is already lined for your movement.
• D. Ask for dispatch permission before proceeding.

Answer: (C)

In this situation, the movement is governed by Stop signal discipline in a CTC environment. A Stop signal protects the block and requires you to come to a complete stop and verify that the route ahead is set for your movement before entering the next block. If the dispatcher has already lined the main-track switch for your movement, that indicates the route authorization is in place. You then stop before entering the block to confirm the track is clear, and once you observe that the switch is lined for your movement, you may proceed back onto the main track. This ensures you don’t enter the main line without proper clearance and that the occupancy of the block is managed safely. Proceeding immediately across the Stop signal would violate the signal indication, and requesting dispatch permission is not needed when the route is already lined for you.