SOUTH DAKOTA CDL AIR BRAKES PRACTICE TEST
11.
What is an important thing to remember about emergency braking?
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Your natural response (hitting the brakes) is never the right solution.
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You should never use stab braking.
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The more heavily loaded semitrailer trailer should be in the rear.
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Pushing down on the brake pedal as hard as you can will only keep the wheels locked up and cause a skid.
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12.
If the low air pressure warning light comes on, you should:
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continue to drive normally.
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call for help.
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set the parking brake.
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stop immediately.
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13.
Before driving a truck or bus with a dual air brake system, the minimum pressure in both the primary and secondary
systems should be at least:
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75 psi.
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130 psi.
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100 psi.
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50 psi.
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14.
Air storage tanks:
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use parts of the service brake systems to stop the vehicle in a brake system failure.
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pump air into the air storage tanks.
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are installed in the first tank the air compressor pumps air to.
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hold compressed air for the brakes.
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15.
With a dual air brake system:
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each system shares the same lines and hoses.
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one system is the main braking system while the other is a back-up system.
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each system has its own air tanks, hoses and lines.
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each system shares air tanks.
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