Why does inspecting a doubles or triples combination take longer than a single trailer combination?

Pick an answer

1. Inspection time is identical regardless of the number of trailers
2. Doubles and triples require less inspection since dollies rarely fail
3. There are more coupling points, dolly components, and sets of lights and brakes to check
4. Only the lead trailer needs to be inspected in a multi-trailer combination, not the rest

Correct!

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