Living in Boise's Downtown, I live next five lanes of traffic drive 35 or 40 mph on an asphalt road fortunately not chip sealed, like many of Idaho's roads. The

Living in Boise's Downtown, I live next five lanes of traffic drive 35 or 40 mph on an asphalt road fortunately not chip sealed, like many of Idaho's roads. The revving engines are bad, but tire noise is easily 50 dB 15 meters off the street.