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Drivers who want to drive combination vehicles must pass the combination vehicles test. The Kansas 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 Kansas CDL Manual. Take this practice test now to prepare for the actual KS CDL combination test!
1.
Longer combination vehicles have the tendency to swing wide on turns. This is called:
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rollover.
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jackknifing.
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off-tracking.
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hydroplaning.
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2.
Which of the following is not a reason for covering cargo?
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To protect the cargo from weather
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To protect people from spilled cargo
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To prevent other drivers from looking at the cargo
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All of the above.
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3.
If your vehicle catches fire, you should pull over:
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near trees.
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in an open area.
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near other vehicles.
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at a service station.
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4.
The front trailer supports are up, and the trailer is resting on the tractor. Make sure:
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the electrical and air connections are properly connected between the tractor and the trailer.
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there is enough clearance between the top of the tractor tires and the nose of the trailer.
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there is enough clearance between the rear of the tractor frame and the landing gear.
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All of the above.
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5.
When the wheels of a trailer lock up, the trailer will tend to swing around. This is more likely to happen when:
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the trailer is overloaded.
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the trailer is empty or lightly loaded.
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the trailer is fully loaded.
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None of the above.
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6.
If an aggressive driver is involved in an accident down the road, you should:
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make eye contact with the driver.
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stop a safe distance from the accident scene, wait for the police and report the behavior you witnessed.
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try to get their vehicle to the side of the road.
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confront the aggressive driver.
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7.
If your trailer starts to skid, you should:
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release the brakes.
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steer in the opposite direction.
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lock the brakes.
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pump the brakes.
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8.
Do not use the trailer hand valve in driving because:
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the trailer emergency brakes will come on.
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of the danger of making the trailer skid.
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the brakes can overheat and lose their braking power.
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All of the above.
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9.
If you unlock the pintle hook with the dolly still under the rear trailer:
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the brakes could be damaged by the combined forces of the springs and the air pressure.
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steam and boiling water can spray under pressure.
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your vehicle might roll away.
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the dolly tow bar may fly up.
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10.
The wheels of a large combination vehicle are more likely to lock up when:
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the trailer has new tires.
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you are traveling in very hot weather.
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the vehicle is lightly loaded.
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the vehicle is heavily loaded.
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