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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.
What is the most important hand signal you should agree on with a helper?
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Stop
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Keep backing
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Go forward
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2.
A steering wheel play of more than ___ degrees can make it hard to steer.
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20
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45
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10
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3.
Which of the following statements about accelerating is TRUE?
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When traction is poor, you should avoid speeding up gradually.
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Rough acceleration can cause mechanical damage.
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If the drive wheels begin to spin, speed up to regain traction.
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4.
Before you back into an area, you should __________ overhanging hazards like trees, branches or electric wires.
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check your mirrors to be aware of
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ask someone else to check for
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get out of the vehicle and check for
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5.
During a pre-trip inspection, to check your lights you should:
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turn off the engine, turn on the headlights and 4-way emergency flashers, and get out of the vehicle.
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check the yellow malfunction lamps on the instrument panel.
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with the engine running, put the vehicle in a forward gear and turn on the headlights.
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6.
When driving, you:
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should only use turn signals if there is a vehicle behind you.
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should always use turn signals to tell other drivers your intentions.
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should carefully evaluate road and traffic conditions to decide if you should use turn signals.
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7.
You should always back and turn toward the driver's side:
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so you can watch the rear of your vehicle by looking out the side window.
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unless it means having to go around the block first.
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unless you have someone to help you.
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8.
When the spring brakes are on, you should never:
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upshift.
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change lanes.
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push the brake pedal down.
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9.
Which of the following is true about lanes changes?
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Lane changes require more than regular mirror checks.
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When changing lanes you should check your mirros as usual.
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Lane changes should always be avoided.
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10.
The most common type of brake is the:
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S-cam drum brake
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G-cam disc brake
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R-cam drum brake
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