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Safely pulling double and triple trailers requires knowledge and skill. If you want to pull double or triple trailers, you must add the Doubles/Triples (T) endorsement to your Class A CDL. The California doubles triples test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The CA CDL doubles triples test covers the following sections of the California CDL Manual: Driving Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Combination Vehicles, Doubles and Triples. Take this CA CDL practice test now to prepare for the actual test!
1.
A low air pressure warning signal:
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is optional on vehicles with air brakes.
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is required on vehicles with air brakes.
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is required on all vehicles without air brakes.
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2.
Rims with welding repairs:
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can be used for tires in the front of the vehicle.
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can be used for tires in the rear of the vehicle.
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are not safe.
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3.
Under a pressurized system, the radiator cap:
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should be removed when the coolant is hot.
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should never be hot.
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should never be removed until the system has cooled.
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4.
Which of the following is NOT correct? Anti-lock brakes:
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require drivers to apply the brakes as hard as they can without locking the wheels.
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give drivers more control over the vehicle during braking.
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help drivers avoid skids caused by over braking.
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5.
If a load is 50 feet long, the minimum number of tie-downs required is:
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5
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4
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10
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6.
When transporting cargo, cargo securement must be checked within the first _____ miles of a trip and every _____ miles after.
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100; 150
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50; 150
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50; 250
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7.
When preparing to make a right turn, you should NOT turn wide to the left as you start the turn. Why?
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A following driver may try to pass you on the right.
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Turning wide to the left can cause your vehicle to tilt.
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It makes the turn harder.
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8.
To prevent getting sleepy while driving, you should:
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keep cool by opening the window.
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keep the cab warm.
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drive alone whenever possible.
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9.
Fully loaded rigs:
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are less likely to roll over than empty rigs.
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are much more likely to roll over than empty rigs.
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are just as likely to roll over as empty rigs.
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10.
If you must drive slowly, how should you alert following drivers?
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Flash your brake lights
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Turn on your taillights
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Use your emergency flashers if it is legal
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