Ask X3What does 49 CFR 392.66 (Carbon monoxide; use of commercial motor vehicle when detected) require?
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According to 49 CFR 392.66, you must not dispatch a commercial motor vehicle, drive it, or allow passengers on it when certain carbon monoxide hazards are known to exist, until the issue has been completely repaired or remedied.
Specifically, you must take the vehicle out of service if:
1. An occupant has been affected by carbon monoxide;
2. Carbon monoxide is detected inside the vehicle; or
3. A mechanical condition is discovered that is likely to create a carbon monoxide hazard for the occupants.
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