CDL · Hazardous materials
Federal rules say a placarded hazmat vehicle should avoid tunnels. When may it still use one?
Correct answer: When there is no practicable alternative route.
Answer options
- AWhenever the driver is running behind schedule
- BWhenever traffic in the tunnel is light
- CWhen there is no practicable alternative route Correct
Why
Under 49 CFR 397.67(b), a placarded vehicle must be routed around tunnels, crowds, and heavily populated areas unless there is no practicable alternative. Convenience or saving time is not a reason to go through, so light traffic or a late schedule does not allow it.
About this question
Topic: Hazardous materials License: CDL
Part of these practice sets:
Where it applies: Asked in every state.
Practice the whole set
This question is part of HazMat Routes, Crossings and Checks (23 questions). Take the full set and check your score.
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