§ 12-805.  Emerging from a Driveway or Building.
   (1)   The operator of a bicycle emerging from a driveway or building shall upon approaching a sidewalk or the sidewalk area extending across any alleyway or driveway, yield the right-of-way to all pedestrians approaching on said sidewalk or sidewalk area, and upon entering the roadway shall yield the right-of-way to all vehicles and street cars approaching on said roadway.