CDL PRACTICE TEST - GENERAL KNOWLEDGE (DELAWARE)
11.
Move-over laws require drivers to _________ when approaching an emergency vehicle stopped on the roadside or a work zone.
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slow down and change lanes
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stop
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sound their horn
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change direction
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12.
When you pull off the road and stop, you should:
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turn on the 4-way emergency flashers.
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use the taillights.
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use your high beams.
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flash your brake lights.
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13.
Which of the following helps keep the engine cool in hot weather?
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Driving faster to force more air into the radiator.
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Making sure there is enough engine oil.
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Making sure the anti-lock braking system is on.
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All of the above.
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14.
When driving at night, if drivers of oncoming vehicles do not put their low beams on, you should:
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pull off the road and stop.
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look slightly to the right at a right lane or edge marking, until the vehicles pass.
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look directly at the headlights.
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flash your high beams to remind the other drivers to use their low beams.
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15.
When only the tractor has ABS:
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the trailer is less likely to swing out.
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you should be able to maintain steering control during braking.
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the ABS won't work.
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there is a greater chance of jackknifing.
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16.
To maintain alertness while driving, you should:
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have another person ride with you.
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avoid medications that cause drowsiness.
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avoid heavy foods.
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All of the above.
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17.
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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should be used together only during bad weather.
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18.
Drivers should watch out for black ice when the temperature is ______ freezing and the road looks ______.
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below; wet
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above; wet
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below; dry
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above; dry
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19.
Which of the following is not part of the air brake system?
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Alcohol evaporator
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Air filter
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Air storage tanks
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Air compressor
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20.
Wheel rims that have had welding repairs:
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should be placed in the front.
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are safe.
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should not be used.
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None of the above.
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