After one train passes at a crossing with more than one set of tracks, why should the driver still wait before crossing?

Pick an answer

1. Only the first train needs to be considered at any crossing
2. Waiting after the first train has passed is only a courtesy to other drivers, not a real safety matter for the bus
3. The crossing arm resets automatically the instant one train has passed
4. A second train could be approaching on another track, possibly hidden by the first

Correct!

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