NC CDL GENERAL KNOWLEDGE TEST - CDL PRACTICE TEST
41.
You are inspecting your vehicle during a trip. What should you do?
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Watch gauges for signs of trouble.
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Use your senses to check for problems.
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Check critical items such as tires, brakes, and lights.
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All of the above.
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42.
When going down a steep downgrade, it is important to select a "safe" speed that is not too fast for:
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the steepness of the grade.
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the total weight of the vehicle and cargo.
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the weather.
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All of the above.
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43.
An anti-lock braking system (ABS):
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should help you steer around an obstacle while braking.
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helps you avoid skids caused by over braking.
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helps you avoid wheel lock up.
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All of the above.
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44.
When driving on packed snow, you should reduce speed by:
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one-third.
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a half.
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25%.
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10%.
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45.
Signaling well before you turn is the best way to:
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let oncoming drivers know that you are about to make a turn.
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invite other drivers to get around you.
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keep other drivers from trying to pass you.
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let pedestrians know that you are about to make a turn.
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46.
Strong winds can make it difficult to stay in your lane, especially when:
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going into tunnels.
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driving at speeds below 40 mph.
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coming out of tunnels.
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driving alongside other vehicles.
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47.
If you feel drowsy, you should _______ before driving.
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listen to upbeat music
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exercise
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sleep
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drink coffee
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48.
If your vehicle is hydroplaning, you should:
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apply the brakes.
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speed up.
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put the vehicle in reverse.
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stay off the brake.
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49.
Perception Distance + Reaction Distance + Brake Lag Distance + Braking Distance = ?
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Stopping Distance - (minus) Brake Fade Distance
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Partial Stopping Distance
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Total Air Pressure
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Total Stopping Distance
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50.
The spring brakes come on:
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when main air pressure is lost.
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when you bring the vehicle to a complete stop right away.
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when you lose ABS control.
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when air pressure in both air brake systems rises to a value set by the manufacturer.
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