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Michigan CDL Permit Test - Knowledge Test Class B

(From the 2021 Michigan CDL driver handbook)

Number of questions:	50
Passing score:	40

Directions: This license is required for driving a single vehicle with a GVWR of more than 26,001 pounds, and a trailer not to exceed 10,000 pounds gross vehicle weight rating, or a vehicle designed to transport 24 or more people (including the driver). To receive this license, applicants must pass a 50-question test. To pass, applicants must answer 40 questions correctly. Each question has four possible answer choices. Test questions come from the Michigan Commercial Driver License Manual. Questions come from chapters covering: Introduction, Driving Safely, Transporting Cargo Safely, Air Brakes (if applicable), Pre-Trip Vehicle Inspection Test, Basic Vehicle Control Skills Test and On-Road Driving.. Endorsements that may be used with a Class B CDL are: Hazardous materials, Tank, Passenger, HazMat and Tank, Air Brakes and School bus.

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Passing grade —

10 or fewer errors

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An after-trip inspection should be done:

Once a week.
Once a month.
After every trip.

A cardboard box on the roadway:

Should be expected to be on the roadway.
Is usually empty and harmless.
Could contain a heavy object that could damage vehicles.

Emergency equipment in a vehicle is:

Only required for vehicles that are transporting hazardous materials.
Only required during interstate travel.
Required.

During an applied leakage test, the maximum leakage rate for a triple combination vehicle is ____ in a minute.

2 psi
4 psi
6 psi

Which of the following is true?

It is safe to drive on a tire that is missing one or two lug nuts.
A cracked lock ring on a rim is safe if you are not driving faster than 55 mph.
A missing clamp on a rim is dangerous and should be corrected.