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Virginia CDL Permit Test - Knowledge Test Class B

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 three possible answer choices. Test questions come from the Virginia 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.
You have made error so far
Passing grade —
10 or fewer errors
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1.
Skids happen when:
Tires lose their grip on the road.
There is too much weight in the trailer.
ABS kicks in.
2.
You are especially likely to encounter strong winds when:
Coming out of tunnels.
Going into tunnels.
Driving on shoulders.
3.
A ____ allows a driver to gradually apply spring brakes.
Modulating control valve
Trailer air supply control
Relay valve
4.
Lights that indicate that anti-lock brakes are not working are:
Gray.
Blue.
Yellow.
5.
If brakes fail on a long downgrade, the driver should:
Turn the vehicle off and then back on to reset the brakes.
Pump the brakes.
Look for an escape ramp or other way to stop.
6.
Tires with tread separation are:
Acceptable if placed on the rear of the vehicle.
Acceptable when transporting lighter loads.
Not acceptable.
7.
When backing with a trailer:
You should not back up in a straight line.
You should not correct drift until you are far off course.
You should frequently pull forward to reposition the vehicle.
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