CDL PRACTICE TEST (TX) - GENERAL KNOWLEDGE TEST
31.
Federal, state, and local regulations for commercial vehicles:
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only apply to US residents.
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only apply to CMV's operated in interstate commerce.
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vary from place to place.
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do not apply to CMV's operated in intrastate commerce.
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32.
Longer combination vehicles have the tendency to swing wide on turns. This is called:
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off-tracking.
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hydroplaning.
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rollover.
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jackknifing.
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33.
Most heavy vehicles require ________ change gears.
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single clutching
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double clutching
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double shifting
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triple shifting
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34.
When you have to back, you should always try to back toward the driver's side because:
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you can see better and watch the rear of your vehicle out the side window.
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it feels more natural.
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backing toward the left side is more dangerous.
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None of the above.
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35.
Before driving a vehicle with a dual air system, allow time for the air compressor to build up a minimum of ____ pressure in both the primary and secondary systems.
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100 psi
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75 psi
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50 psi
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25 psi
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36.
When driving, do NOT:
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warn the drivers behind by flashing your brake lights if you see a hazard that will require slowing down.
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put your turn signal on before changing lanes.
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try to help out other drivers by signaling when it is safe to pass.
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assume that vehicles, pedestrians or bicyclists see you whenever you are about to pass them.
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37.
Which of the following statements about drinking alcohol is TRUE?
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A 5-ounce glass of 12 percent wine contains the same amount of alcohol as a 12-ounce glass of 5 percent beer.
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Coffee and a little fresh air will help a drinker sober up.
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Alcohol only impairs judgement, not muscle coordination.
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Alcohol only affects people who are not used to drinking.
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38.
If a load is placed on one side of the trailer:
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your brakes won't work.
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the steering axle weight will be too light to steer safely.
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making turns may be easier.
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a rollover is more likely.
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39.
When your rear wheels lock up, you may:
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lose steering control.
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gain better control of the vehicle.
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skid, jackknife, or spin
the vehicle.
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All of the above.
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40.
Distracted driving can cause collisions. Which of the following can distract your attention while you are driving?
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Driving below the speed limit.
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Talking to passengers.
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Listening to music.
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All of the above.
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