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New Noise Cameras Pit Drivers of Fast Cars Against Their Neighbors

Traffic police deploy new technology—and steep fines—to combat roaring mufflers, revving engines and blaring stereos

A roadside noise camera on a street in Newport, R.I. Tony Luong for WSJ

ET

NEWPORT, R.I.—As the crimson Mustang GT rumbled toward winding Ocean Avenue on the rocky Atlantic coast, a roadside noise camera was listening.

The device measured the Ford’s throaty engine and exhaust at 85 decibels, two over Newport’s limit, city records show. A camera snapped its license plate. 

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