AL CDL PRACTICE TEST - GENERAL KNOWLEDGE
31.
ABS brakes help you:
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avoid wheel lock up.
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find an escape route when the service brakes fail.
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lock up the wheels in an emergency stop.
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downshift before starting down a hill.
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32.
The posted speed limit:
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is only a suggestion.
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should never be exceeded.
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should only be exceeded when passing other vehicles.
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may only be exceeded when driving in rural areas.
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33.
Texting while operating a commercial motor vehicle is:
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acceptable if you are contacting your supervisor.
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only allowed at night.
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illegal.
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acceptable if you are contacting your dispacther.
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34.
To determine how much space you should keep in front of you, one good says you need at least ______ for each 10 feet of vehicle length at speeds below 40 mph.
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3 seconds
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1 second
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2 seconds
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4 seconds
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35.
To determine a safe speed for a downgrade, you should consider:
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The total weight of the vehicle and cargo.
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Trip origin and destination city.
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Oncoming traffic.
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All of the above.
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36.
The application pressure gauge:
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stops the compressor from pumping air.
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tells you how much pressure is in the air tanks.
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protects the tank and the rest of the system from too much pressure.
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shows how much air pressure is being applied to the brakes.
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37.
When traction is poor, as in rain or snow, you should speed up very gradually. If you don't:
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brake pressure will push the rod out.
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the brakes will not work.
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you will exceed the speed limit.
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you could lose control.
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38.
You are driving a heavy vehicle with a manual transmission, and you have to stop on the shoulder while driving on an uphill grade. When putting your vehicle back in motion up the grade, you should:
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shift down to a speed that you can control without using the brakes.
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keep the clutch slipping while slowly accelerating.
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partly engage the clutch before you take your right foot off the brake.
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use the parking brake to hold the vehicle until the clutch engages.
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39.
A driver distraction is anything that takes your attention away from driving, such as:
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billboards.
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pedestrians.
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adjusting the radio.
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All of the above.
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40.
In some states, move-over laws require drivers to:
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slow and change lanes when approaching a roadside incident.
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submit to a chemical test to determine their BAC when requested by a peace officer.
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obey the directions given by police officers at railroad crossings.
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All of the above.
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