CDL GENERAL KNOWLEDGE TEST (MD) - PRACTICE TEST
11.
If you have to drive off the road, you should:
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keep one set of wheels on the pavement, if possible.
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leave the road completely.
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brake as hard as you can to maintain control.
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fully apply the brakes until your speed has dropped to about 20 mph.
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12.
Use your four-way emergency flashers:
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when parked at the side of the road.
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to warn drivers behind you that people are working on the road.
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when stopping at railroad highway crossings.
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All of the above.
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13.
A tank endorsement is:
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required for both liquids and gases.
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only required when transporting gases.
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not required when transporting hazardous materials.
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only required when transporting liquids.
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14.
Which of the following is NOT a hazard?
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A freeway/highway exits that
go downhill
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An escape ramp
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A cardboard box on the road
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Work zones
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15.
Shaded parts of the road:
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will remain icy and slippery after other areas have melted.
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usually don't freeze.
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usually are not slippery.
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will melt before open areas.
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16.
Most heavy duty vehicles use ___ air brake systems for safety.
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dual
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reduced
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triple
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single
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17.
Which of the following is not a way to know when to change gears?
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Check that the pressure gauge shows normal oil pressure
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Use road speed (mph)
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Use engine speed (rpm)
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Watch your tachometer
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18.
The only way to stop a front-wheel skid is to:
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countersteer.
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supply more power to the drive wheels.
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let the vehicle slow down.
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All of the above.
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19.
_________ are used on many vehicles to provide extra gears.
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Retarders and multi-speed rear axles
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Auxiliary transmissions and power steering cylinders
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None of the other answers is correct.
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Multi-speed rear axles and auxiliary transmissions
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20.
Which of the following statements about engine belts and driving in hot weather is true?
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Loose belts will not turn the water pump and/or fan on properly.
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You can check v-belt tightness by pressing on the belts.
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Loose belts will result in overheating.
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All of the above.
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