A bus may carry no more than how many pounds of solid Class 6 poison?
Correct answer: D – 100 pounds
The passenger-vehicle hazardous-material restrictions prohibit a bus from carrying more than 100 pounds of solid Class 6 poison. Liquid Class 6 poison and certain other dangerous materials are prohibited on buses regardless of this weight limit. The tested maximum for the solid material is 100 pounds.
Source: Alabama Commercial Driver License Manual — § 4.2.2, “Forbidden Hazardous Materials.”, 49 CFR § 177.870 — Regulations for passenger carrying vehicles.

