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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. You should use chocks when parking a trailer without spring brakes because:
it helps prevent skids.
it is required by law.
the brakes will hold only as long as there is air pressure in the trailer air tank.
2. If your vehicle is equipped with air brakes, loss of air pressure in the emergency line causes:
the trailer emergency brakes to come on.
the trailer spring brakes to come on.
the speed of your vehicle to increase.
3. If you feel drowsy while driving, what should you do?
Get an energy drink.
Turn on the radio to keep you awake.
Pull off the road and get some sleep.
4. The trailer hand valve should:
be used in driving.
never be used to test the trailer brakes.
never be used for parking.
5. Emergency brakes are:
not required on buses.
not required on doubles.
required on all vehicles.
6. If a vehicle is equipped with ABS, when you start the engine:
the spring brakes will come on.
the ABS indicator light on the dash should come on and then turn off.
the wheels will lock up.
7. You are driving a heavy vehicle with a manual transmission, and you have to stop on the shoulder while driving on an uphill grade. When putting your vehicle back in motion up the grade, you should:
shift down to a speed that you can control without using the brakes.
partly engage the clutch before you take your right foot off the brake.
use the parking brake to hold the vehicle until the clutch engages.
8. When checking air brakes on combination vehicles, which of the following is NOT part of checking that air flows to all trailers?
Going to the rear of the rig.
Pulling tractor forward until the fifth-wheel comes out from under the trailer.
Using the trailer handbrake to provide air to the service line.
9. Livestock:
can move around in a trailer and cause unsafe handling.
should never be carried on a trailer.
should never be kept bunched together.
10. Most truck driver deaths in crashes result from:
driving side-by-side with another truck.
truck rollovers.
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RI CDL Combination Test

Number of questions: 20
Correct answers to pass:16
Passing score:80%
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