Emergency stop relay:
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Metal cap
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A car drives by with a loudspeaker
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Driving by wet road
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Pneumatic drill
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The car moves on slush
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Rain on the roof of the car
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Waiting, The car is fast approaching, jamming
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Friction of gear elements in a car
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Driving in a car with a muffler
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The car starts, slowly drives away
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Car suspension swinging car
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Water supply, Car wipers
★★★★★