Free CDL Passenger Vehicles Practice Test 2026
Prepare to inspect, load, and operate buses while keeping passengers, aisles, and exits safe. Knowledge tests are federal: you need 80% on each one (49 CFR 383.135(a)(1)), whether you test in Texas, California, or anywhere else. QuizLane has 45 reviewed passenger vehicles questions with explanations.
- Vehicle inspection
- Passenger loading
- Emergency exits
- Prohibited practices
Sample questions
5 passenger vehicles practice questions
Each sample shows the correct answer with a plain-language explanation. The full 45-question bank is in the practice run after you pick a state.
1. Fuelling a bus with passengers aboard is:
- ARequired before every trip
- BEncouraged to save time
- Never permitted in a closed building and best avoided entirely
- DPermitted whenever the engine is running
Answer: Never permitted in a closed building and best avoided entirely. Fuel vapour in an enclosed space is a serious fire risk. Avoid fuelling with riders aboard, and never do so inside a closed building.
2. The standee line on a bus marks:
- AThe emergency exit only
- BThe fare box queue
- CWhere baggage may be stacked
- Where standing riders must stay behind (no standing forward of the rear of the driver’s seat)
Answer: Where standing riders must stay behind (no standing forward of the rear of the driver’s seat). Buses that allow standing use a floor line or equivalent so riders do not block the driver.
3. Carry-on baggage must be secured so that it does not:
- Block aisles or exits or fall onto riders
- BExceed the ticket purchase price
- CSit in an overhead rack
- DRest under a rider’s own seat
Answer: Block aisles or exits or fall onto riders. Keep baggage from limiting driver movement in the cabin, and never leave it in a doorway.
4. Why must bus aisles and exits remain clear?
- ATo increase cargo space
- BTo reduce mirror use
- CTo improve fuel economy
- To allow safe movement and emergency evacuation
Answer: To allow safe movement and emergency evacuation. Blocked aisles or exits can injure passengers and delay evacuation during an emergency.
5. When passengers leave the bus at a rest stop, the driver should:
- AAsk passengers to signal by horn
- BLeave the engine running and rest
- Watch for passengers returning and account for them before departing
- DLock the doors and remain seated
Answer: Watch for passengers returning and account for them before departing. Counting riders back aboard prevents leaving someone behind, and watching the boarding area keeps people clear of the wheels.
Common questions
Before you start this CDL practice test
Other CDL knowledge tests
Keep going topic by topic.
- General knowledge
- Air brakes
- Combination vehicles
- Hazardous materials
- Tank vehicles
- Doubles & triples
- School bus
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