DC CDL PRACTICE TEST - GENERAL KNOWLEDGE
11.
A hazard is:
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A dangerous material.
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Something you can easily avoid.
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Something you must stop for.
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Any road user or road condition that is a possible danger.
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12.
Placards must be placed:
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on the driver's side of the vehicle.
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on the front, rear and both sides of the vehicle.
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on the rear only.
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on the front only.
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13.
Truck tractors with air brakes built after March 1, 1997, are required to be equipped with:
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hydraulic brakes.
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anti-lock brakes.
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GPS
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a rear backup camera.
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14.
When backing, as soon as you see the trailer getting off the proper path, you should:
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turn the top of the steering wheel in the opposite direction of the drift.
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turn the top of the steering wheel in the direction of the drift.
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to keep a firm grip on the steering wheel and continue backing.
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None of the above.
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15.
Which of these is true about the radiator shutters and the winterfront?
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If the winterfront is left open, the engine may overheat.
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You should remove ice from the radiator shutters.
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You should make sure the winterfront is closed tightly.
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All of the above.
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16.
Class A:B:C fire extinguishers are designed to work on:
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burning liquids.
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burning wood, paper, and cloth.
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electrical fires.
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All of the above.
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17.
The liver can only process ______ of alcohol per hour, much ____ than the alcohol in a standard drink.
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one ounce; less
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1/8 an ounce; more
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1/3 an ounce; less
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one ounce; more
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18.
When approaching an emergency vehicle stopped on the side of the road with lights flashing, you should:
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move to the lane not next to that of the emergency vehicle.
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speed up.
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yielding the right-of-way by coming to a complete stop.
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stay in the right lane.
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19.
To keep the engine cool in hot weather, you should:
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make sure the engine cooling system has enough water and antifreeze.
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check v-belt tightness by pressing on the belts.
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make sure there is enough engine oil.
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All of the above.
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20.
Why should you put the starter switch key in your pocket during the pre-trip inspection?
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So no one moves the vehicle while you are inspecting underneath it.
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You will need it to inspect the trailer.
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So you don't lose it.
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All of the above.
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