CDL AIR BRAKES PRACTICE TEST - ILLINOIS
16.
Truck tractors with air brakes built after March 1, 1997, are required to be equipped with:
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a rear backup camera.
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anti-lock brakes.
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GPS
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hydraulic brakes.
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17.
The posted speed limit:
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is only a suggestion.
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may only be exceeded when driving in rural areas.
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should only be exceeded when passing other vehicles.
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should never be exceeded.
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18.
When you push the brake pedal down, air brakes work:
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immediately.
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only when ABS is working.
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after a short delay.
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after about 15 seconds.
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19.
Typically an air system is fully-charged at:
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75 psi
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125 psi
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250 psi
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25 psi
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20.
If your vehicle is equipped with a front brake limiting valve, to ensure normal stopping power make sure the control is:
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in the "normal" position.
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in the "off" position.
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in the "slippery" position.
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in the "neutral" position.
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