ID CDL GENERAL KNOWLEDGE TEST - CDL PRACTICE TEST
41.
A low air pressure warning signal:
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is required on all vehicles without air brakes.
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is optional on vehicles with air brakes.
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is required on vehicles with air brakes.
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42.
When backing, you should:
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avoid using the mirrors.
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use a helper if possible.
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back quickly.
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43.
When you use mirrors while driving on the road, you should:
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focus on the mirrors for a long time.
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check quickly.
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only use one mirror.
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44.
During a pre-trip inspection, to check your lights you should:
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turn off the engine, turn on the headlights and 4-way emergency flashers, and get out of the vehicle.
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with the engine running, put the vehicle in a forward gear and turn on the headlights.
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check the yellow malfunction lamps on the instrument panel.
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45.
Antilock brakes:
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let you drive faster.
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decrease your stopping distance.
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None of the above.
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46.
When you are driving in close quarters, you should:
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avoid checking your your mirrors too frequently.
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not use your mirrors.
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check your mirrors often.
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47.
Hanging meat in a refrigerated truck:
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should never be transported.
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can be a very unstable load.
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will not affect safe driving ability.
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48.
The most common cause of skidding is:
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driving too fast for conditions.
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surface water.
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black ice.
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49.
When driving, you should:
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use your mirrors only when changing lanes.
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check your mirrors regularly.
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avoid checking your mirros often.
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50.
When starting your vehicle, the warning lights and buzzers:
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should stay on until you manually turn them off.
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should go out right away.
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should stay on for 15-20 seconds.
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