No additional driveway entrances or approaches shall be erected, constructed or maintained into the same premises, structure or building used for manufacturing, industrial or commercial purposes at a distance closer than 22 feet to any existing driveway entrance or approach; and in all cases where two or more driveway entrances or approaches are erected, constructed or maintained, they shall be separated by a sidewalk area or island not less than 22 feet in width at the narrowest point to any existing driveway entrance or approach.
(Prior Code, § 12.12.060)