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Trying to move your vehicle to the side of the road
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Caring for the injured
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Driving away from the scene
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California CDL Permit Test - Knowledge Test Class B
(From the 2021 California 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 26,000 pounds, a 3-axle vehicle weighing over 6,000 pounds, a bus (except a trailer bus), with endorsement or any farm labor vehicle, with endorsement. To receive this license, applicants must pass a 50-question test. Each question has three answer choices. To pass, applicants must answer 40 questions correctly. Test questions come from the California Commercial Driver Handbook. Questions come from chapters covering: Introduction, Driving Safely, Transporting Cargo Safely, Air Brakes (if applicable), Combination Vehicles, 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.
Passing grade —
10 or fewer errors
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1.
If involved in an accident, which of the following is not recommended?
2.
While driving downhill, you should brake until you reach a speed that is ____ below your safe speed, then release the brake pedal.
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5 mph
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10 mph
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15 mph
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3.
When backing with a trailer, you should begin by:
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Turning the steering wheel in the direction of the turn.
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Turning the steering wheel in the direction opposite of the turn.
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Turning the wheel as sharply as possible.
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4.
Why do large vehicles use air brakes?
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Other brake systems squeak too loudly.
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Air brakes are very effective systems.
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Other braking systems are hard to come by.
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5.
You may not consume alcohol within ____ of going on duty.
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One hour
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Two hours
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Four hours
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6.
When backing with a trailer:
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You should not back up in a straight line.
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You should not correct drift until you are far off course.
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You should frequently pull forward to reposition the vehicle.
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7.
A tread depth of ____ should be in every major groove of a tire that is not in the front of a commercial motor vehicle.
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1/32 of an inch
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2/32 of an inch
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4/32 of an inch
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