NM CDL Doubles Triples Test - Practice Test
11.
For safe handling, the heaviest trailer should be:
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behind the tractor.
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the second trailer in a triple.
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the last trailer.
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12.
When driving in hot weather, drivers should inspect tires:
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every 2 hours or every 100 miles.
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every 3 hours or every 75 miles.
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every 4 hours or every 200 miles.
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13.
ABS:
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improves your visibility at night.
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helps you avoid skids caused by over braking.
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helps you stop faster.
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14.
You must have at least _____ inch tread depth in every major groove on front tires.
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2/32
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6/32
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4/32
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15.
If you are feeling sleepy, you should:
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increase your speed to get to the destination quicker.
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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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16.
Radial and bias-ply tires:
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should not be used together.
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should be used together.
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should be used together only when driving in packed snow.
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17.
Doubles and triples are:
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easier to drive than other combination vehicles.
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more likely to turn over than other combination vehicles because of the "crack-the-whip" effect.
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less likely to turn over than other combination vehicles.
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18.
When coupling a double or triple, ________ should be attached last.
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the trailer right behind the cab.
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the middle trailer.
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None of the above.
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19.
Which of the the following statements about fatigue is true?
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Fatigued driving is one of the leading causes of accidents.
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Fatigue impairs your vision and judgment.
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All of the above.
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20.
When coupling, you should:
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make sure the trailer kingpin is bent.
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make sure the trailer wheels are not chocked.
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be aware that wrong coupling and uncoupling can be very dangerous.
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