Which Class 1 explosive may be carried in the passenger-occupied space of a bus?
Correct answer: C – Small-arms ammunition
Federal rules prohibit Class 1 explosive material in the passenger-carrying space of a for-hire vehicle, except for small-arms ammunition. Proper labeling or keeping another type of explosive out of passengers' sight does not create an exception. Other limited transportation provisions do not change the restriction governing passenger-occupied space.
Source: New Jersey Commercial Driver's License Manual — § 4.2.2, “Forbidden Hazardous Materials”, 49 CFR § 177.870(c) – Regulations for Passenger Carrying Vehicles

