SC CDL GENERAL KNOWLEDGE TEST - CDL PRACTICE TEST
41.
When passing a vehicle, you should NOT:
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at night, flash your lights from low to high beam and back.
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keep blowing your horn while passing.
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assume the other driver does not see you.
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drive carefully enough to avoid an accident.
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42.
Who is responsible for making sure the lights and reflectors are clean?
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The previous driver
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The driver
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The shipper
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The maintenance staff
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43.
Emergency lines are often coded with the color ___ to keep from getting them mixed up with the service line.
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blue.
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yellow.
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white.
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red.
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44.
Class A:B:C fire extinguishers are designed to work on:
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electrical fires.
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burning wood, paper, and cloth.
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burning liquids.
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All of the above.
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45.
How can you tell if your vehicle is equipped with anti-lock braking system (ABS)?
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Look under the vehicle for the wheel speed sensor wires coming from the back of the brakes.
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Trailers will have yellow ABS malfunction lamps on the left side.
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Look for yellow ABS malfunction lamps on the instrument panel.
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All of the above.
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46.
The wheels of a large combination vehicle are more likely to lock up when:
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the vehicle is heavily loaded.
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you are traveling in very hot weather.
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the vehicle is lightly loaded.
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the trailer has new tires.
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47.
Transporting livestock requires special attention. Why?
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Because livestock can lean on curves.
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Because livestock can move around in a trailer.
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Because a rollover is more likely.
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All of the above.
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48.
Distracted driving can cause accidents. To avoid distractions while on the road, you should:
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limit the use of your mobile phone to the first hour of driving.
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turn off all communication devices.
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plan your route while driving only if there are no cars around you.
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smoke, eat, and drink only when traffic conditions allow.
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49.
Which of these vehicles must come to a complete stop at railroad grade crossings?
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School buses
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Heavy equipment
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Trucks carrying explosives
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All of the above.
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50.
What is the most important hand signal you should agree on with a helper?
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Turn right
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Go forward
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Keep backing
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Stop
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