AIR BRAKES PRACTICE TEST - UTAH
21.
A dual air brake system:
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has two separate air brake systems, which use a single set of brake controls.
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has a single air brake system, which uses a single set of brake controls.
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has a single air brake system, which uses two separate sets of brake controls.
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has two separate air brake systems, which use two separate sets of brake controls.
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22.
To check slack adjusters on S-cam brakes, you should:
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check that the spring brakes come on automatically.
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use gloves and pull hard on each slack adjuster you can reach.
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press the brake pedal and listen for any strange noises.
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All of the above.
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23.
If you are being tailgated, you should:
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avoid quick changes.
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avoid tricks like turning on your taillights or flashing your brake lights.
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increase your following distance.
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All of the above.
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24.
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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25.
To test the service brake:
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push the brake pedal firmly while slowly moving backward.
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push the brake pedal firmly while going about 5 mph.
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gently try to pull forward with the trailer parking brake on, then release the brake.
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shift your transmission to a low gear, pump the brake pedal three times, then hold it down for five seconds.
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