The interlock releases when you:
Answer: C
Close the rear door.
The brake and accelerator interlock system will release when the exit door is closed.
All choices
- ARelease parking brake.
- BClose the front door.
- CClose the rear door.
Why the other answers are wrong
A. Release parking brake.
Choice A is wrong because releasing the parking brake does not release the interlock system.
B. Close the front door.
Choice B is wrong because the interlock releases when the exit door, not the front door, is closed.
CDL Passenger Test Info
Questions on Exam
20
Passing Score
80%
Time Limit
Typically 30 minutes; varies by testing location
The Passenger test content is federally standardized, so this question applies in every state. Age limits, fees, and testing procedures do vary — check your state's CDL requirements.
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