CDL COMBINATION PRACTICE TEST CONNECTICUT
11.
During a walk around inspection of a combination vehicle, drivers should check that:
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the locking jaws are around the shank.
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all locking pins are present and locked in place.
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the glide plate is securely mounted to the trailer frame.
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All of the above.
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12.
When the wheels of a trailer lock up:
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ABS will increase stopping power.
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the trailer will tend to swing around.
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the vehicle will gradually come to a complete stop.
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All of the above.
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13.
A red triangle with an orange center means:
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Liquid tanker
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The vehicle is hauling hazardous materials
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Slow-moving vehicle
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Law enforcement vehicle
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14.
When you drive a tractor-trailer combination with ABS, you should:
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pump the brakes.
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always apply the brakes hard.
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apply the trailer hand brake whe braking.
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brake as you always have.
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15.
Which of the following is NOT part of the procedure to raise the landing gear?
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Raising the landing gear all the way up
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Safely securing the crank handle, after raising the landing gear
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Using the high range gear, if equipped, to begin raising the landing gear
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Using the low range gear, if equipped, to begin raising the landing gear
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16.
The tractor protection valve:
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controls the emergency brakes on combination vehicles.
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supplies air to the trailer air tanks.
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works the trailer brakes.
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keeps air in the tractor brake system should the trailer break away or develop a bad leak.
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17.
If you are feeling sleepy, you should:
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slow down and drive on the shoulder of the road.
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pull off the road and rest or take a nap.
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increase your speed to get to the destination quicker.
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None of the above.
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18.
Inspecting the fifth-wheel does NOT include:
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checking for missing or damaged parts.
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making sure that the fifth wheel is in the proper position for coupling.
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checking that there are no cracks in the frame.
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backing until the fifth-wheel just touches the trailer.
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19.
What should you do if your vehicle gets stuck on the railroad tracks?
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Turn on the emergency flashers and call 911.
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Call 911, then get out of the vehicle and away from the tracks.
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Stay inside the vehicle and call 911.
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Get out of the vehicle and away from the tracks as quickly as possible, then call 911.
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20.
If your vehicle thumps or vibrates heavily, it may be a sign that:
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the engine belt is loose.
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one of the tires has gone flat.
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you need to shift up.
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the brakes have failed.
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