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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.
Glad hands are used to:
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connect the service and emergency air lines from the truck or tractor to the trailer.
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connect the electrical lines from the truck or tractor to the trailer.
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connect the brakes from the truck or tractor to the trailer.
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2.
Most heavy trucks with manual transmissions require ____ to change gears.
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single clutching
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double clutching
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triple clutching
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3.
Longer combination vehicles have the tendency to swing wide on turns. This is called:
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jackknifing.
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hydroplaning.
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off-tracking.
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4.
If you must make an emergency stop, you should:
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brake in a way that will keep your vehicle in a straight line.
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use the hand brake before the brake pedal.
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apply the brakes as hard as you can to lock them.
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5.
When backing with a trailer, you should:
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check your mirrors on both sides frequently.
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look at your line of travel before you begin backing.
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All of the above.
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6.
How do you find out how many seconds of following distance you have?
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Pass a stationary object and count how many seconds it takes the vehicle ahead of you to reach the same spot.
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Wait until the vehicle ahead of you passes a pavement marking, shadow or landmark. Then count off the seconds until you reach the same spot.
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Wait until the vehicle ahead of you passes a pavement marking or some other clear landmark, then use the stopwatch on your mobile phone to see how long it takes you to reach the same spot.
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7.
The trailer hand valve should be used only:
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when the trailer is fully loaded.
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to test the trailer brakes.
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in driving to prevent skids.
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8.
In your mirror, you see a car approaching from the rear. The next time you check your mirror, you don't see the car. If you wish to change lanes, you should:
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wait until you are sure the car isn't in your blind spot.
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assume the car left the roadway and change lanes as normal.
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ease into the other lane slowly so the other car can get out of the way.
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9.
Which of the following is NOT a warning sign of fatigue?
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Driving at the speed of the traffic
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Frequent blinking
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Heavy eyelids
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10.
Combination vehicles usually require _________ single commercial vehicles.
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less driving skill than
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the same level of skill as
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more driving skill than
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