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Iowa CDL Permit Test - Passenger

(From the 2020 Iowa CDL driver handbook)
Number of questions: 20
Passing score: 16
Directions: To receive this endorsement, applicants must pass a test consisting of 20 multiple choice questions. Each question has three answer choices. To pass, the applicant must answer at least 16 questions correctly. Test questions come from the Iowa Commercial Driver License Manual. Questions come from chapters covering: Driving Safely, Transporting Passengers Safely, Pre-Trip Vehicle Inspection Test, Basic Vehicle Control Skills Test and On-Road Driving. The Passenger endorsement can be used with the Class A, B or C CDL.
You have made error so far
Passing grade —
4 or fewer errors
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1.
A broken exhaust system:
Can allow poisonous fumes to enter the cabin.
Does not cause problems.
Should not be a concern.
2.
Which of the following is acceptable if found during a pre-trip inspection?
Mismatched tire sizes
Tread of 3/32 of an inch in the grooves of the front tires
Tires manufactured by different makers
3.
Backing with a trailer is dangerous because:
It is difficult to see behind the vehicle.
Most trucks do not have the ability to go in reverse.
Cargo may fall out of the trailer.
4.
A Class 1 hazardous material is:
An explosive.
Radioactive.
Corrosive.
5.
Skids caused by over-acceleration can usually be resolved by:
Removing your foot from the accelerator.
Braking.
Swerving to the right.
6.
An encroachment is when:
A driver does not appear for their scheduled basic skills test.
A vehicle touches an exercise boundary line during the basic skills test.
A driver fails one section of the basic skills test.
7.
When driving under wet conditions, a lack of spray coming from the tires of other vehicles indicates that:
Ice has formed on the road.
The pavement is dry.
The spray is caught on the underside of the vehicle.
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