How should you verify that doors are properly closed before departure?

• A. Rely on passenger reports.
• B. Listen for a latch click only.
• C. Close doors and depart without checks.
• D. Confirm door status indicators show closed; check for door faults; ensure no passengers are trapped.

Answer: (D)

Verifying doors before departure means using objective signals from the train’s door system and checking for safety faults, not relying on guesses or quick cues. The best practice is to confirm that door status indicators show closed, check for any door faults, and ensure no passengers are trapped. This approach ensures the doors are truly secured and the interlocks are in a safe state before moving. Indicators give a direct readout of the door condition and interlock status, so you won’t miss a fault that could prevent doors from sealing properly or trigger a safety lock after you start moving. If a fault is present or someone is trapped, you must address it before departing. Relying on passenger reports is unreliable, and listening for a latch click alone can be deceptive, since a door might click yet still be misaligned or have an unresolved fault. Departing without these checks is unsafe because it could leave a fault unaddressed or put passengers at risk.