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Drivers who want to drive combination vehicles must pass the combination vehicles test. The Rhode Island CDL combination test consists of 20 questions, and you'll need at least 16 correct answers to pass (80%). The test covers the combination vehicles section of the Rhode Island CDL Manual. Take this practice test now to prepare for the actual RI CDL combination test!
1.
By pushing the trailer air supply control knob in, you:
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shut the air off and put on the trailer emergency brakes.
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supply the tires with air.
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supply the trailer with air.
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2.
When driving at night you should:
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always use low beams.
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use your high beams when it is safe and legal to do so.
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All of the above.
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3.
When driving a combination vehicle, which of the following 2 things will help you prevent a rollover?
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Keeping the cargo near the ground and driving slowly around turns.
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Keeping cargo near the center of the vehicle and driving slowly on turns.
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Keeping cargo near the center of the vehicle and driving slowly on the highway.
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4.
The tire load rating is stated:
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on the side of each tire.
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inside the suspension system.
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on each axle.
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5.
When approaching a vehicle with a distracted driver, you should:
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maintain your safe following distance.
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quickly pass the vehicle.
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change lanes quickly.
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6.
To avoid rollovers, you should drive slowly:
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around corners.
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on ramps.
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All of the above.
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7.
When transporting cargo, cargo securement must be checked within the first _____ miles of a trip and every _____ miles after.
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50; 150
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100; 150
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50; 250
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8.
ABS will:
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shorten your stopping distance.
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not change your normal braking capability.
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increase your average speed.
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9.
The service line is also called:
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control line or signal line.
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pressure line or signal line.
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signal line or air line.
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10.
When parking a trailer without spring brakes, it is very important for safety that you use wheel chocks. Why?
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if you don't use wheel chocks, supply air will be sent to the service line instead of going to charge the trailer air tanks.
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You may not notice a major leak in the service line until you try to put the brakes on.
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The air could leak out of the trailer air tank, releasing its emergency brakes.
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