GENERAL KNOWLEDGE CDL TEST IOWA - PRACTICE TEST
31.
When driving on wet roads, you should:
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follow the vehicle ahead more closely than under ideal driving conditions.
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pull of the road and get some rest.
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reduce speed by about one-third.
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32.
When should you be particularly careful about high winds?
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When going downhill
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When emerging from a tunnel
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When driving at night
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33.
Your placarded trailer has dual tires. How often should you check the tires?
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At the start of each trip and every time you stop.
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Once every 50 miles.
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Once every three hours.
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34.
To correct a drive-wheel braking skid, you should stop braking and:
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accelerate slightly.
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countersteer.
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keep your foot off the clutch.
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35.
Slippery surfaces usually:
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make it easier to stop.
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make it more difficult to stop.
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can cause lack of steering power.
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36.
To warn drivers behind you that you will be slowing down, you should:
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turn on the right and left turn signals at the same time.
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turn on the parking, clearance and side-marker lights.
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tap your brake pedal a few times to flash your brake lights.
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37.
In order to protect yourself and others, you must be aware that children may do something hazardous because:
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they tend to like trucks.
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they don't have a driving license.
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they tend to act quickly without checking traffic.
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38.
To test your hydraulic brakes for leaks:
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pump the brake pedal three times, then hold it down for five seconds.
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turn off the engine and and listen for leaks.
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apply firm pressure to the brakes for five seconds, then pump them three times.
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39.
Weight that is loaded so there is a high center of gravity:
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makes a vehicle easier to handle.
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causes greater chance of rollover.
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reduces the chance that the load will shift to the side or fall off.
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40.
If the ABS is not working:
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you should immediately reduce your speed.
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the truck will still have normal brakes.
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the truck will have no brakes.
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