What is the indication of track occupancy when no train or vehicle is present?

• A. Dwell Time
• B. False Occupancy
• C. Emergency
• D. Energize

Answer: (B)

Track occupancy without a train is called false occupancy. This happens when the signaling system shows the section as occupied even though there’s no train present, usually due to a fault in the track circuit or a stuck/faulty relay, moisture or metal contact on the rails, or other electrical interference. The system interprets the faulty condition as an occupied track, which can trigger signals and protections as if a train were there.

This is the best answer because it directly describes an occupancy indication that is not caused by a real train. The other terms refer to different concepts: how long a train stays at a location (dwell time), a safety alert or stop (emergency), or turning on power to the system (energize). They don’t describe an incorrect occupancy indication.