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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. When backing a trailer, if you turn the wheel left:
the cab will go left and the trailer will go right.
the cab and the trailer will go left.
the cab will go right and the trailer will go left.
2. Where are shut-off valves?
At the back of each trailer.
At the front and back of each trailer.
At the front of each trailer.
3. Blocking _______________ to keep it from sliding.
is used only in the back of a piece of cargo
is used in the front, back, and/or sides of a piece of cargo
goes from the upper part of the cargo to the floor
4. If your trucks has a high center of gravity, which of the following is true for curves?
You should travel at the posted speed limit.
You should slow down, as your truck can roll over at the posted speed limit for the curve.
Reduce your speed to a crawl.
5. Before transporting sealed loads, you should check:
that you don't exceed gross weight and axle weight limits.
the special transit permit.
a small sample of whatever is inside.
6. When backing a trailer, turn the wheel right to make the cab go ________ and the trailer go ________.
right; left
left; left
left; right
7. If the safety relief valve in the air brake system releases air:
something is wrong.
the valve is fully operational.
this will supply more power to the brakes.
8. To avoid rollbacks when you start, you should:
if you have manual transmission, partly engage the clutch before you take your right foot off the brake.
release the parking brake only when you have applied enough engine power.
All of the above.
9. If your trailer starts to skid, you should:
steer in the opposite direction.
pump the brakes.
release the brakes.
10. The iron trailer supports are up, and the full weight of the trailer is resting on the tractor. Make sure:
you are in a low enough gear.
the safety latch is not engaged.
there is enough clearance between the rear of the tractor frame and the landing gear.
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RI CDL Combination Test

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