COMBINATION TEST SOUTH CAROLINA - PRACTICE TEST
11.
When you drive a tractor-trailer combination with ABS, you should:
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apply the trailer hand brake whe braking.
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pump the brakes.
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always apply the brakes hard.
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brake as you always have.
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12.
As you approach off ramps and on ramps, remember:
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to maintain your highway speed.
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that downgrades make it easier to reduce speed.
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to always brake and turn at the same time.
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that the posted speed limit may not be safe for larger vehicles.
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13.
If you must stop on a one-way or divided highway, you should place warning devices _______ toward the approaching traffic.
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5, 25 and 50 feet
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5, 50 and 500 feet
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3, 15 and 45 feet
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10, 100 and 200 feet
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14.
When driving in very hot weather, the heat will increase the chances of:
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loss of hydraulic pressure.
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ABS malfunction.
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tire failure.
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suspension system defects.
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15.
If a load is placed on one side of the trailer:
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your brakes won't work.
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making turns may be easier.
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a rollover is more likely.
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the steering axle weight will be too light to steer safely.
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16.
When driving on slippery roads, you should NOT:
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go slowly.
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try to anticipate stops early.
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use the engine brake.
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watch far enough ahead to keep a steady speed.
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17.
Which of the following is true about the trailer hand valve?
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If used in driving it could cause the trailer to skid.
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The trailer hand valve works the trailer brakes.
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It should be used only to test the trailer brakes.
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All of the above.
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18.
Which of the following may have reduced the clearances since the heights were posted at bridges and overpasses?
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Traffic
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Repaving of the road
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Rain
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The weight of a cargo
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19.
What is the proper following distance for a 40 foot truck traveling at 35 mph?
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12 seconds
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4 seconds
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5 seconds
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10 seconds
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20.
When backing a truck you should:
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get out and walk around the vehicle before you begin to back.
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look straight ahead.
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back and turn toward the right side.
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always rely on your mirrors.
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