Driveway approaches serving properties classified in any of the R zones of the city shall be constructed and maintained so that:
(A) The width of each individual driveway approach shall be in accordance with the city's standards therefor; and
(B) The sum of all driveway approach widths on any lot shall not exceed 40% of the street frontage of the property on each abutting street.
('83 Code, § 12.08.200)