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Safely pulling double and triple trailers requires knowledge and skill. If you want to pull double or triple trailers, you must add the Doubles/Triples (T) endorsement to your Class A CDL. The Kansas doubles triples test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The KS CDL doubles triples test covers the following sections of the Kansas CDL Manual: Driving Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Combination Vehicles, Doubles and Triples. Take this KS CDL practice test now to prepare for the actual test! Important: Triple trailers are not legal in Kansas.
1.
When the temperature drops:
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bridges will not freeze.
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bridges will freeze before the road will.
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bridges usually freeze after other parts of the roadway.
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None of the above.
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2.
You are driving on a steep downgrade in the proper low gear. Your "safe" speed is 40 mph. When your speed reaches 40 mph, you should:
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maintain your current speed, and apply the brakes when you reach 50 mph to gradually reduce your speed to 40 mph.
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apply the brakes to gradually reduce your speed to 35 mph, and then release the brakes.
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apply the brakes to quickly reduce your speed to 25 mph, and then release the brakes.
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increase your speed to approximately 45 mph, and then apply release the brakes.
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3.
Exhaust system parts should NOT:
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rub against tires.
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rub against fuel system parts.
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be loose.
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All of the above.
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4.
If the drive wheels start to skid:
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use the brakes to slow down.
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accelerate slightly to regain control.
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push in the clutch to let them turn freely.
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All of the above.
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5.
Why should you back toward the driver's side?
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Using double clutching requires practice.
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You can more easily correct any steering errors.
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You can see better and watch the rear of your vehicle by looking out the side window.
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All 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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confront the aggressive driver.
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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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7.
What is true about tire chains?
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You must carry the at least 6 chains and extra cross-links.
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You should learn how to put the chains on before you need to do it in snow.
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You should watch the official video tutorial by the manifacturer before putting them on.
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All of the above.
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8.
An item that is 15 feet long placed on a flatbed trailer should have at least:
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15 tie-downs.
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2 tie-downs.
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1 tie-down.
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3 tie-downs.
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9.
If you must make an emergency stop, you should:
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apply the brakes as hard as you can to lock them.
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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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None of the above.
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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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None of the above.
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