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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.
An Anti-lock Braking System (ABS):
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keeps your wheels from locking up when you brake hard.
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lets you drive faster.
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increases your normal braking capability.
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2.
To determine how much space you should keep in front of you, one good says you need at least ______ for each 10 feet of vehicle length at speeds below 40 mph.
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1 second
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2 seconds
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3 seconds
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3.
When driving on slippery surfaces, a lack of spray from other vehicles indicates that:
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there is no ice on the road surface.
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ice has formed on the road.
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the pavement is dry.
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4.
Empty trucks have _________ heavily loaded trucks.
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the same traction as
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less traction than
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more traction than
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5.
When making a left turn at an intersection, you should:
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reach the center of the intersection before you start the left turn.
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always take the left turn lane if there are two turning lanes.
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always use your horn.
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6.
When driving a modern truck, the gear you should be in before starting down a hill is usually_____ the gear required to climb the same hill.
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the same as
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lower than
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higher than
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7.
A cardboard box on the road:
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may contain some solid material capable of causing damage.
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is likely to be empty and should not be considered a hazard.
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will never damage vehicle parts if driven over.
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8.
When shifting up, you should release accelerator, push in clutch and shift to neutral at the same time, and then?
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Shift up
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Release the clutch
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Push in the clutch again
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9.
Bracing is used to:
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make cargo easier to unload.
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prevent movement of cargo.
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increase the height of the vehicle’s center of gravity.
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10.
When passing a vehicle, you should NOT:
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assume the other driver does not see you.
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keep blowing your horn while passing.
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at night, flash your lights from low to high beam and back.
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