AIR BRAKES CDL PRACTICE TEST - GEORGIA
6.
Spring brakes are usually held back by:
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the brake pedal.
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air pressure.
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the antilock braking system.
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modulating control valves.
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7.
When the spring brakes are on, you should never:
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upshift.
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change lanes.
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decrease your speed.
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push the brake pedal down.
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8.
The safety valve is usually set to open at:
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100 psi
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150 psi
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125 psi
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200 psi
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9.
The tire load rating is stated:
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on the side of each tire.
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inside the suspension system.
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on the dashboard.
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on each axle.
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10.
In vehicles with air brakes, the two markings on a front brake limiting valve are:
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normal and slippery.
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left and right.
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high and low.
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wet and dry.
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