It shall be unlawful for any person owning or occupying private property within the
city to plant, grow, cultivate, erect, maintain or permit any trees, bushes, shrubs,
vines, weeds, underbrush, loose earth, signs, fences or other similar obstructions,
except preexisting buildings and similar structures fixed to the ground located within
the sight triangle of the corner on any public street, road or highway in the city,
including medians, if by so doing it shall constitute a traffic hazard by obstructing
the vision of pedestrians, bicyclists or operations of any other vehicles traveling
upon any public street, road or highway.