A.
While vehicles are being loaded or unloaded, no person shall obstruct a sidewalk area in an unreasonable way or for an unreasonable period of time.
B.
No person shall erect or maintain a tree, hedge, billboard or other obstruction which obstructs the view of any motorist driving a vehicle approaching an intersection from a cross street for a distance of 100 feet along such cross street, measured from the property line of the intersecting street.