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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 Rhode Island doubles triples test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The RI CDL doubles triples test covers the following sections of the Rhode Island CDL Manual: Driving Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Combination Vehicles, Doubles and Triples. Take this RI CDL practice test now to prepare for the actual test!
1.
If a vehicle is equipped with ABS, when you start the engine:
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the spring brakes will come on.
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the ABS indicator light on the dash should come on and then turn off.
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the wheels will lock up.
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2.
The best advice for driving in fog is:
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don't drive.
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use low beams.
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use high beams.
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3.
By pushing the trailer air supply control knob in, you:
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supply the tires with air.
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shut the air off and put on the trailer emergency brakes.
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supply the trailer with air.
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4.
To prevent rollover, you should:
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put the lightest parts of the cargo under the heaviest parts.
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place the cargo near the rear of the trailer.
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keep the cargo as close to the ground as possible.
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5.
Texting while operating a commercial motor vehicle is:
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acceptable if you are contacting your dispacther.
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acceptable if you are contacting your supervisor.
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illegal.
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6.
Air tanks usually hold enough compressed air to allow the brakes to be used _________ even if the compressor stops working.
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for one day
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several times
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for one stop
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7.
Retarders:
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reduce braking distance.
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help slow a vehicle, reducing the need for using brakes.
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improve gas mileage.
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8.
For safety during a trip, you should:
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check critical items when you stop.
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watch gauges for signs of trouble.
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All of the above.
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9.
You should be especially alert for drunk drivers:
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around shopping areas.
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in the morning.
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late at night.
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10.
A bridge formula permits:
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less maximum axle weight for axles that are close together.
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more maximum axle weight for axles that are closer together.
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less maximum axle weight for axles that are far apart.
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