Awnings that also act as safety nets made out of fireproof netted or meshed wire on the underside of light-weight, flameproof. waterproof, rot & mildew resistant Tarpaulins that reduce the need for clearing snow, rain, leaves from sidewalks and paths, INCREASE PEDESTRIAN USE OF SIDEWALKS THEREBY REDUCING THE USE OF FOSSIL FUELS, and prevent accidents due to poor design in commercial buildings (especially retail mails that have open drops where escalators look down many floors). The awnings can be a consistent style in a city, supported by poles next to buildings, with cantilevers to the street and or poles next to the street (but likely not on the corners where they will likely get run over) that have a slight lower angle closer to the street. There should be springs and loose wire that allow for the tarpaulinís overhang to give in order to trap a falling human body, but not so loose as not allow rain or snow to spill onto the street. Cantilevered awnings were common on train stations and in the old west. Old Sacramento, California buildings almost all have awnings.
Examples of Awnings in history:Old Sacramento, California