The operator of roller blades, roller skates, roller skis or a skateboard emerging from any alley, driveway, or building, upon approaching a sidewalk or the sidewalk area extending across any alleyway, shall yield the right-of-way to all pedestrians approaching on the sidewalk or sidewalk area and upon entering the street shall yield the right-of-way to all vehicles approaching on the street.
Penalty, see § 74.99