A. Where frontage roads are not required; residential lots adjacent to an arterial shall be served by a local residential street paralleling the arterial at a generous lot depth therefrom; or by a series of cul-de-sacs or loop streets extending towards the arterial from a collector street five hundred feet therefrom. In such cases; a wall or fence with masonry pillars of a design approved by the planning director shall be required at the rear of properties adjacent to the arterial. A strip of permanent landscaping within the arterial right-of-way not less than six feet in width; subject to approval of the planning director shall be required adjacent to the wall or fence; facing the arterial.

B. Where the council finds it necessary in order to preserve a sense of community and aesthetics; residential lots fronting on an arterial street may be constructed where existing adjacent residential developments have such frontage. The necessity for lots with arterial frontage may be determined at the time of tentative map approval; unless the council makes such determination by an amendment or addition to the circulation element of the general plan; which determination shall then govern.