KANSAS CDL AIR BRAKES PRACTICE TEST
6.
In a dual-air system - with engine at operating RPM, the pressure should build from 85 to 100 psi within how many seconds?
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20
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12
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45
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60
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7.
In newer vehicles with air brakes, you put on the parking brake:
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using a P-shaped, yellow control knob.
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moving the orange push-pull lever to the right.
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using a diamond-shaped, yellow, push-pull control knob.
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placing the transmission in Park.
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8.
When you make a quick lane change, the crack-the-whip effect can:
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turn the trailer over.
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the trailer to swing wide to the left.
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improve your traction.
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make it harder to turn without skidding.
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9.
What factors can cause brakes to fade?
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Dirt roads and in unpaved yards.
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Gravel and tar.
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Slippery surfaces and shaded areas.
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Excessive heat and brakes out of adjustment.
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10.
If you must drive slowly, how should you alert following drivers?
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Help them out by signaling when it is safe to pass
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Turn on your taillights
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Flash your brake lights
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Use your emergency flashers if it is legal
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