DOUBLES TRIPLES TEST ME - CDL PRACTICE TEST
11.
If a load is 10 feet long, the minimum number of tie-downs required is:
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2
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3
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1
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12.
The center of gravity of a trailer should be:
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as high as possible.
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as low as possible.
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at the rear of the trailer.
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13.
It may not be safe to operate at legal maximum weights:
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on two-way streets.
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in hot weather.
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during bad weather or in mountains.
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14.
Strong winds can make it difficult to stay in your lane, especially when:
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going into tunnels.
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coming out of tunnels.
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driving at speeds below 40 mph.
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15.
ABS:
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helps you increase your following distance.
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does not decrease your stopping distance.
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helps you increase your average speed.
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16.
If there is a fire and you are not sure what to use to put it out, you should:
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use water.
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use a fire extinguisher.
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wait for firefighters.
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17.
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 front trailer of 65 ft. conventional doubles
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The last trailer of triples
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18.
Enough tread is especially important in winter conditions. You need at least ________ tread depth on steering axle tires.
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6/24 inch
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2/8 inch
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4/32 inch
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19.
Why should you back toward the driver's side?
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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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You can more easily correct any steering errors.
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All of the above.
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20.
If the fifth-wheel locking lever is not locked after the jaws close around the kingpin:
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the coupling is not right and you should not drive until you get it fixed.
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the parking brakes are on and your vehicle is safe to drive.
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the parking brakes are on and the wheels are chocked.
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