CDL Passenger (P) Endorsement Test
Hazardous materials on buses: practice questions
Our CDL Passenger bank has 25 questions on this topic. Here are 5 of them with answers; the full mock exam draws from every topic, like the real one.
Question 1
When may you transport a hazardous material on a bus?
- Only when you are sure the rules allow it
- Whenever it is unlabeled
- Whenever a rider asks
- Whenever it fits under a seat or in the rack
Show the answer
A. Only when you are sure the rules allow it — Do not transport any hazardous material unless you are sure the rules allow it (CDL Manual 4.2.1)
Question 2
Which of these is a bus allowed to carry?
- Emergency hospital supplies and drugs
- Labeled radioactive material in the passenger area
- Liquid Class 6 poison
- Irritating material
Show the answer
A. Emergency hospital supplies and drugs — Buses may carry small-arms ammunition, emergency hospital supplies, and drugs (CDL Manual 4.2.2)
Question 3
Where may labeled radioactive materials never be carried on a bus?
- Anywhere at all, by law
- In the trunk or baggage compartment
- Under the floor
- In the space occupied by people
Show the answer
D. In the space occupied by people — Labeled radioactive materials may not be in the space occupied by people; packages must be stored only in the trunk or baggage compartment (CDL Manual 4.2.2; 49 CFR 177.870(g))
Question 4
In the manual's hazard class table, which class are fireworks?
- Class 9, miscellaneous
- Class 1, explosives
- Class 6, poisons
- Class 3, flammable
Show the answer
B. Class 1, explosives — Hazard class table: Class 1 Explosives, e.g. ammunition, dynamite, fireworks (CDL Manual 4.2.1, Figure 4.1)
Question 5
Which of these may a bus carry?
- Small-arms ammunition
- Tear gas
- A car battery carried on by a rider
- Division 2.3 poison gas
Show the answer
A. Small-arms ammunition — Buses may carry small-arms ammunition, emergency hospital supplies and drugs (CDL Manual 4.2.2; 49 CFR 177.870(b))