HI CDL GENERAL KNOWLEDGE TEST - CDL PRACTICE TEST
21.
Older trailers do not have spring brakes. If the air supply leaks away:
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the trailer will stop normally.
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the ABS won't work properly.
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there will be no emergency brakes.
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22.
To release the parking brakes:
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push the parking brake control knob in.
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pump the brake pedal 3 times.
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pull the parking brake control knob out.
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23.
When approaching a stopped bus, you must be aware that:
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passing a stopped bus is illegal.
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passengers may cross in front of or behind the bus.
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a student may be driving the bus.
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24.
To make sure you always have overhead clearance, always be aware that:
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an empty vehicle is taller than a loaded one.
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re-paving or packed snow may have reduced the clearances since the heights were posted at bridges and overpasses.
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All of the above.
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25.
when you apply the service brake at 5 mph, which of the following might indicate a problem?
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The tongue/draw-bar is not bent.
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The vehicle stops when the brake is applied.
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The vehicle pulls to one side or the other.
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26.
Checking the engine compartment during the seven-step inspection does NOT include checking:
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the power steering fluid level.
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the engine oil level.
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the engine oil temperature.
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27.
The most common type of brake is the:
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G-cam disc brake
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R-cam drum brake
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S-cam drum brake
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28.
During your pre-trip inspection, you should check:
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Warning flashers.
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Tire tread depth.
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All of the above.
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29.
Regardless of its size, cargo should have at least ___ tie-downs.
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2
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3
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1
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30.
When backing a trailer, you should:
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avoid correcting the drift.
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turn the steering wheel in the direction you want to go.
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try to position your vehicle so you can back in a straight line.
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