§ 1173. Emerging from alley, driveway, private road or building. The driver of a vehicle emerging from an alley, driveway, private road or building shall stop such vehicle immediately prior to driving onto a sidewalk extending across any alleyway, building entrance, road or driveway, or in the event there is no sidewalk, shall stop at the point nearest the roadway to be entered where the driver has a view of approaching traffic thereon.