LA CDL PRACTICE TEST - GENERAL KNOWLEDGE
21.
Passive railroad crossings:
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usually have a person directing traffic.
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have at least one traffic control device.
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do not have traffic control devices.
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should never be crossed using a CMV.
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22.
When your rear wheels lock up, you may:
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skid, jackknife, or spin
the vehicle.
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gain better control of the vehicle.
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lose steering control.
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All of the above.
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23.
The air storage tanks:
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are used to hold compressed air.
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are connected to the engine through gears or a v-belt.
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stop the compressor from pumping air.
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protects the tank and the rest of the system from too much pressure.
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24.
Federal, state, and local regulations for commercial vehicles:
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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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only apply to CMV's operated in interstate commerce.
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only apply to US residents.
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25.
When checking your mirrors you should:
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only use the driver side mirror.
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use both mirrors.
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only use the passenger side mirror.
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not make regular checks.
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26.
If you are driving toward a traffic light that's been green for a long time, you should:
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maintain your current speed.
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start slowing down and be ready to stop.
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brake as quickly as possible.
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increase your speed to get through the intersection before the traffic light changes to red.
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27.
Which of the following are key steering system parts?
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Lug nuts, rims, tire
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Tie rod, drag link, spindle
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Axle, main spring, spring shackle
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Leaf spring, torque rod, front axle hanger
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28.
In your mirror, you see a car approaching from the rear. The next time you check your mirror, you don't see the car. If you wish to change lanes, you should:
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ease into the other lane slowly so the other car can get out of the way.
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assume the car left the roadway and change lanes as normal.
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wait until you are sure the car isn't in your blind spot.
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None of the above.
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29.
ABS:
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helps you increase your average speed.
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does not decrease your stopping distance.
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helps you increase your following distance.
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improves your visibility at night.
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30.
What is Gross Vehicle Weight Rating?
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The total weight of a combination of vehicles excluding the load
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The total weight of a combination of vehicles including the load
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The total weight of a single vehicle, including its load
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The value specified by the manufacturer as the loaded weight of a single vehicle
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