"Stroads" are in commercial areas by definition. A typical neighborhood designed after the car became popular does not have any multi lane roads inside of it. It will have them around it, but people who live in the neighborhood will not be directly on the arterial roads. The larger road used for commercial transport in low density areas is either a "stroad" or highway.

Please take five minutes to look on Google Maps before commenting about neighborhood design in a country 5000 miles away.