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The CDL general knowledge test is required to be taken by all CDL applicants. The California CDL test consists of 50 questions. To pass, you must correctly answer at least 40 questions (80%). The general knowledge test covers the contents of the California CDL Manual.
All CDL applicants (Class A, B and C) must study the following sections: Driving Safely, Transporting Cargo Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Vehicle Inspection Test, Basic Control Skills Test, Road Test. In addition, the Class A CDL test will include questions based on the Combination Vehicles section. Take this CDL practice test now to prepare for the actual CA general knowledge test!
To get your CDL, you must pass both the knowledge and skills tests. CDL knowledge tests include: General Knowledge, Passenger Transport, Air Brakes, Combination Vehicles, Hazardous Materials, Tanker Vehicles, Doubles/Triples, School Bus, Firefighter. Depending on what class of license (A, B or C) and endorsements you need, you must take one or more knowledge tests. A special endorsement is also required to drive certain types of vehicles. The following endorsements may be used with a Class A, B or C CDL: HazMat (H), Tank Vehicles (N), Tank Vehicles Transporting Hazardous Materials (X) and Passenger Transport (P). The School Bus endorsement (S) is only available for Class A or B CDL, and the Doubles/Triples endorsement (T) is only available for Class A driver's licenses.
1.
Backing is dangerous because:
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cargo may fall out.
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you have to turn the steering wheel toward the direction you want to go.
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you cannot see everything behind your vehicle.
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2.
When driving in fog, drivers should:
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use the windshield wipers.
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use low beams.
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use high beams.
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3.
Weaving across the road or drifting from one side to another is typical of:
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impaired drivers.
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confused drivers.
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shoppers.
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4.
Longer combination vehicles have the tendency to swing wide on turns. This is called:
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jackknifing.
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hydroplaning.
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off-tracking.
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5.
How do you put on the parking brake on newer vehicles?
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By move a yellow lever to the left.
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By using a round yellow knob.
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By pulling out a diamond-shaped yellow knob.
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6.
Which of the following is NOT a possible penalty for having more than one license?
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Warning for a first offense
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Jail time
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A large fine
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7.
If you are driving toward a traffic light that's been green for a long time, you should:
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increase your speed to get through the intersection before the traffic light changes to red.
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start slowing down and be ready to stop.
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brake as quickly as possible.
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8.
Front brake limiting valves were used to:
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reduce the chance of the front wheels skidding on slippery surfaces.
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reduce your speed so further braking or shifting is not required.
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prevent overheating of the front tires.
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9.
Which of these should make you reject a vehicle until it is rectified?
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Tires of different sizes
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Tires with different tread patterns
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Tires from different manufacturers
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10.
After starting the engine, the ABS light stays on. This means:
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the ABS is in Neutral.
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the ABS is not working properly.
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the ABS is working properly.
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