Adjacent pavement. In a residence district, no sidewalk, patio, pavement, asphalt, concrete, stonework or other form of construction shall be installed, constructed, applied or used so as to serve to widen, extend or alter any driveway beyond the dimensions permissible under this chapter. In the event that a sidewalk, patio, pavement, asphalt, concrete, stonework or other form of construction is installed, constructed or applied immediately adjacent to a driveway in a residence district, the same shall have a maximum permissible width of 42 inches and shall be separated from the driveway by a permanent curb of at least six inches in height. Specifically exempted from the provisions of this section shall be sidewalks or walkways located within the public right-of-way.