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Drivers who want to drive combination vehicles must pass the combination vehicles test. The Connecticut 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 Connecticut CDL Manual. Take this practice test now to prepare for the actual CT CDL combination test!
1.
During a trip:
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you should watch gauges for signs of trouble.
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you should not watch gauges as they can be misleading.
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you should watch gauges to make sure that valve caps are not missing.
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None of the above.
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2.
The center of gravity of a trailer should be:
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at the rear of the trailer.
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at the front of the trailer.
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as low as possible.
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as high as possible.
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3.
Which of the following makes a rollover more likely?
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Turning too fast.
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If the load is to one side so it makes a trailer lean.
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Weight that is loaded so there is a high center of gravity.
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All of the above.
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4.
Cargo tie-downs are used to:
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prevent freezing.
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prevent skidding.
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keep cargo from shifting or falling.
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prevent right-turn accidents.
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5.
When you back under a trailer:
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use lowest reverse gear.
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make sure the trailer brakes are locked.
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back the tractor slowly.
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All of the above.
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6.
To avoid rollovers, you should drive slowly:
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around corners.
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on ramps.
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off ramps.
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All of the above.
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7.
When coupling a tractor to a semi-trailer, after checking if the fifth-wheel is in proper position for coupling you should:
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make sure the area around the vehicle is clear and the trailer wheels are chocked.
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connect the electrical cord and check the air lines.
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connect the air lines to the trailer.
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secure the vehicle.
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8.
If you let air out of hot tires:
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the tires will cool off much sooner.
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air pressure will increases, causing the tires to blow out.
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as the tire cools, the air pressure will be too low.
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None of the above.
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9.
When uncoupling a trailer, after shutting off the trailer air supply to lock the trailer brakes, you should:
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immediately apply your tractor parking brakes.
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inspect the trailer supports.
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pull the tractor forward until the fifth-wheel comes out from under the trailer.
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back up gently to ease the pressure on the fifth-wheel locking jaws.
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10.
If the ABS is not working:
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the vehicle will have weak brakes.
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you still have normal brake functions.
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the vehicle will have no brakes.
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None of the above.
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