The movement of cars on the bridge, drone, thumping metal in the tunnel:
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Metal strike
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Dragging a car muffler along the sidewalk
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Mailbox opening, keying
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Trash can lid
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The chain falls on concrete, metal, earth
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Drop an empty metal canister
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Falling object on a metal surface
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Big trolley being driven, metal creaks,
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Roll a metal barrel
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Rattle of metal, Drop
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Hammer blows, Anvil
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Kick on the car
★★★★★