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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.
After a tire has been changed, you should:
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stop a short while later and check that the nuts are tight.
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decrease tire pressure.
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deflate the tire to 15 psi.
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2.
A steering wheel should have no more than _____ of play. If there is more play than this, it may be hard to steer.
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15 degrees
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10 degrees
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30 degrees
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3.
With brake drums, if brakes become too hot:
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the brakes will supply too much power to the drive wheels.
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your ABS will malfunction.
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the brakes may stop working.
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4.
Which of the following makes a rollover more likely?
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Weight that is loaded so there is a high center of gravity.
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If the load is to one side so it makes a trailer lean.
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All of the above.
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5.
A truck tractor with _________ requires the shortest stopping distance.
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an empty trailer
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a lightly loaded trailer
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a fully loaded trailer
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6.
What is the proper following distance for a 50 foot truck traveling at 50 mph?
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25 seconds
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6 seconds
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5 seconds
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7.
Inspecting the fifth-wheel does NOT include:
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backing until the fifth-wheel just touches the trailer.
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checking for missing or damaged parts.
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checking that there are no cracks in the frame.
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8.
If your vehicle thumps or vibrates heavily, it may be a sign that:
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you need to shift up.
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the brakes have failed.
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one of the tires has gone flat.
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9.
To be in the proper position for coupling, the fifth wheel should:
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have its jaws closed around the shank of the kingpin.
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tilted up towards the rear of the tractor.
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be tilted down towards the rear of the tractor.
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10.
If your cargo only fills one-third of the length of your trailer, make sure your cargo is:
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centered and spread out as much as possible.
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piled up high with heavy cargo on top.
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to one side and as close to the ground as possible.
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