A group of downtown Chicago residents is asking their alderman to pass an ordinance that would install automated cameras to ticket drivers with loud mufflers. The proposal calls for devices that would have microphones that would detect the loudness of mufflers. First-time violators would get a warning in the mail; before they are ticketed. Cameras for the pilot program would initially be limited to the downtown area bound by North Avenue, Ashland Avenue, I-55, and Lake Michigan.