CDL COMBINATION PRACTICE TEST MAINE
11.
If the drive wheels start to skid:
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accelerate slightly to regain control.
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use the brakes to slow down.
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push in the clutch to let them turn freely.
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12.
You have uncoupled a trailer and want to inspect the landing gear. The tractor should be positioned:
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completely clear of the trailer.
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with the tractor frame under the trailer.
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with the tractor frame above the trailer.
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13.
A bridge formula permits less maximum axle weight for axles that:
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have a high center of gravity
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are closer together
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are further apart than normal
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14.
Strong winds can make it difficult to stay in your lane especially when driving:
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heavier vehicles.
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lighter vehicles.
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vehicles with ABS.
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15.
Which of these is more likely to rollover due to the "crack-the-whip" effect?
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The last trailer of doubles
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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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16.
When you have to back, you should always try to back toward the driver's side. Why?
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You can watch the front of your vehicle by looking out the side window.
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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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17.
The proper following distance for a 60-foot vehicle traveling at 50 mph is:
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4 seconds
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6 seconds
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7 seconds
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18.
Most truck driver deaths in crashes result from:
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off-tracking.
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driving side-by-side with another truck.
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truck rollovers.
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19.
Which of the following trailers can get stuck on raised crossings?
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Lowboy
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Car carrier
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All of the above.
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20.
When checking air brakes on combination vehicles, which of the following is NOT part of checking that air flows to all trailers?
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Going to the rear of the rig.
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Using the trailer handbrake to provide air to the service line.
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Pulling tractor forward until the fifth-wheel comes out from under the trailer.
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