One of the key impacts that planners worry about, aside from the obvious noise and smell, is visitors. Homeowners in residential zones expect that the streets

One of the key impacts that planners worry about, aside from the obvious noise and smell, is visitors. Homeowners in residential zones expect that the streets are used rarely, and by people they personally know. Businesses generate traffic. Worse, much of that traffic is outsiders. Sometimes you will see mixed or light-commercial zones immediately adjoining residential zones, where the key criterion is that the business “does not normally receive visitors.”