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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.
When you leave your vehicle you should:
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leave the key in the ignition.
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apply the service brake.
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None of the above.
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2.
Which of the following is part of checking lights?
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Turning off the engine and taking the key with you.
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Turning on the headlights and four-way flashers.
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All of the above.
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3.
To warn drivers behind you that you will be slowing down, you should:
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turn on the right and left turn signals at the same time.
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tap your brake pedal a few times to flash your brake lights.
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turn on the parking, clearance and side-marker lights.
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4.
When is use of a drug given to a driver by a doctor permitted?
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Only if it's a prescription drug.
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Never.
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Only if the doctor informs the driver that the drug won't affect safe driving ability.
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5.
Which of the following should you check for looseness, damage, sticking or improper settings?
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Transmission controls
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Steering wheel
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All of the above.
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6.
Water
in the brakes can cause the brakes to:
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fade.
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overheat.
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be weak or apply unevenly.
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7.
If you must stop on a one-way or divided highway, you should place warning devices _______ toward the approaching traffic.
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10, 100 and 200 feet
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5, 50 and 500 feet
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5, 25 and 50 feet
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8.
Which of these is NOT something you should check during the pre-trip inspection of the engine compartment?
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Brake controls
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Engine oil level
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Coolant level in radiator
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9.
ABS malfunction lamps are located:
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on the instrument panel.
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under the hood.
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on the driver'door.
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10.
The minimum tire tread depth for front tires is:
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4/16 inch
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2/32 inch
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4/32 inch
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