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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 Florida doubles triples test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The FL CDL doubles triples test covers the following sections of the Florida CDL Manual: Driving Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Combination Vehicles, Doubles and Triples. Take this FL CDL practice test now to prepare for the actual test!
1.
Radial and bias-ply tires:
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should be used together only when driving in packed snow.
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should be used together.
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should be used together only during bad weather.
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should not be used together.
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2.
If you're feeling tired while driving you should:
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stop driving and get some rest.
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eat something.
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drink coffee.
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increase your speed to get to your destination quicker.
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3.
Rims with welding repairs:
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are not safe.
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can be used for tires in the rear of the vehicle.
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can be used for tires in the front of the vehicle.
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are acceptable only when carrying a heavy load.
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4.
Exhaust system parts should NOT:
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rub against fuel system parts.
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rub against tires.
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be loose.
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All of the above.
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5.
Which of the following is not a type of retarder?
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Electric
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Pressure
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Hydraulic
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Exhaust
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6.
As you approach off ramps and on ramps, remember:
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that braking and turning at the same time can be a dangerous.
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to slow down before you get on the curved part of an off ramp or on ramp.
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that the posted speed limit may be safe for automobiles, but may not be safe for larger vehicles.
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All of the above.
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7.
When coupling twin trailers, the more heavily loaded semitrailer should:
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be in the rear.
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have chocked wheels.
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be in first position behind the tractor.
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have its brakes locked.
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8.
To know if your vehicle is equipped with ABS, look for:
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the ABS shipping paper.
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the ABS logo on the steering wheel.
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an ABS placard.
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a yellow ABS malfunction lamps on the instrument panel.
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9.
Truck tractors with air brakes built after March 1, 1997, are required to be equipped with:
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a rear backup camera.
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GPS
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hydraulic brakes.
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anti-lock brakes.
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10.
How can you tell if a converter dollie has ABS?
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There is an ABS plaque on the right side of the dolly.
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There is a red lamp on the left side of the dolly.
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There is an ABS system on the right side of the dolly.
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There is a yellow lamp on the left side of the dolly.
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