AIR BRAKES PRACTICE TEST - MONTANA
16.
Your vehicle has a dual air brake system. If one air system is very low on pressure, you should:
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reduce your speed and drive to the nearest garage for repairs.
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reduce your speed and check the low air pressure warning signal for the other system regularly.
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bring the vehicle to a safe stop, and have the air brakes system fixed.
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call your dispatcher or supervisor for instructions.
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17.
When is it safe to leave your vehicle unattended without applying the parking brakes or chocking the wheels?
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When the tank pressure falls to the "cut-in" pressure.
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Never.
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Only while you are taking a rest break.
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When you are conducting your pre-trip inspection.
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18.
Air tanks must be drained because:
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when you push the brake pedal, air is let into each brake chamber.
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if you don't drain the tanks yourself, your battery fluid may drain out.
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if one air system is low on pressure, the rear brakes will not be operating fully.
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compressed air usually has some water in it. The water can freeze in cold
weather and cause brake failure.
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19.
In newer vehicles with air brakes, you put on the parking brake:
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moving the orange push-pull lever to the right.
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using a P-shaped, yellow control knob.
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placing the transmission in Park.
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using a diamond-shaped, yellow, push-pull control knob.
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20.
If you must stop on a one-way or divided highway, you should place warning devices _______ toward the approaching traffic.
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5, 25 and 50 feet
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5, 50 and 500 feet
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3, 15 and 45 feet
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10, 100 and 200 feet
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