MA CDL COMBINATION PRACTICE TEST
11.
How do you find out how many seconds of following distance you have?
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Pass a stationary object and count how many seconds it takes the vehicle ahead of you to reach the same spot.
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Wait until the vehicle ahead of you passes a pavement marking, shadow or landmark. Then count off the seconds until you reach the same spot.
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Wait until the vehicle ahead of you passes a pavement marking or some other clear landmark, then use the stopwatch on your mobile phone to see how long it takes you to reach the same spot.
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None of the above.
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12.
If your vehicle catches fire, you should pull over:
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in an open area.
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at a service station.
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near trees.
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near other vehicles.
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13.
Which of the following is NOT TRUE? When you drive a tractor-trailer combination with ABS, you should:
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brake the same way, regardless of whether you have ABS on the tractor, the trailer, or both.
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monitor your tractor and trailer as you slow down, and if it is safe to do so, back off the brakes to stay in control.
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drive slower to keep your vehicle in a straight line.
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use only the braking force necessary to stop safely.
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14.
Which of the following may have reduced the clearances since the heights were posted at bridges and overpasses?
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The weight of a cargo
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Traffic
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Repaving of the road
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Rain
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15.
Never
drive with landing gear only part way up. Why?
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It may be harder to use.
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It must be exactly 5 feet off the ground.
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It may catch on railroad tracks.
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It makes it harder to brake.
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16.
Combination vehicles have __ air lines.
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2
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3
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4
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1
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17.
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 plate is greased as required.
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checking the area around the vehicle.
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ensuring the fifth wheel is in the proper position for coupling.
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18.
Which of these vehicles will off-track the most?
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A tractor towing a 52-foot trailer.
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A tractor towing a 40-foot trailer.
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A tractor towing a 28-foot trailer.
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A tractor towing a 36-foot trailer.
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19.
When you are driving on a slippery road, you should NOT:
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keep a longer following distance.
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use the engine brake or speed retarder.
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adjust turning and braking to road conditions.
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take curves at slower speeds.
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20.
What factors can cause brakes to fail or fade?
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Brakes out of adjustment
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Excessive use of the service brakes
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Not relying on the engine braking effect
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All of the above.
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