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Drivers who want to drive combination vehicles must pass the combination vehicles test. The Ohio 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 Ohio CDL Manual. Take this practice test now to prepare for the actual OH CDL combination test!
1.
The trailer hand valve should:
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never be used for parking.
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never be used to test the trailer brakes.
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be used in driving.
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2.
Empty trucks have the best braking. True or False?
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True.
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It depends on the cargo.
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False.
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3.
A trailer jackknife is more likely to happen when the trailer is:
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overloaded.
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empty.
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loaded to its full capacity.
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4.
If you smell exhaust fumes in the cab, you should:
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stop immediately.
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remember to conduct a post-trip inspection.
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open the windows.
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5.
Which of these is more likely to rollover due to the "crack-the-whip" effect?
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The last trailer of triples
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The front trailer of 65 ft. conventional doubles
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The last trailer of doubles
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6.
When transporting cargo, drivers must inspect the securement of the cargo every:
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300 miles
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150 miles
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30 miles
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7.
The first thing to do when coupling a tractor-semitrailer is to:
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check the trailer height.
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inspect the fifth wheel.
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lock the trailer brakes.
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8.
The two most important things that a driver can do to prevent a rollover when driving a combination vehicle are:
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Keeping cargo near center of vehicle and driving slowly on the highway
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Keeping cargo near the center of the vehicle and driving slowly on turns
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Driving slowly around turns and keeping the cargo as close to the ground as possible
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9.
Combination vehicles have __ air lines.
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1
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2
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3
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10.
If you begin to feel drowsy while driving, you should:
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pull off the road and get some rest.
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get an energy drink.
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get some coffee.
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