A private drive may serve a maximum of three lots. However, with
the permission of the Planning Board, a private drive may serve a
maximum of five lots, provided that two of the five lots are of conforming
size, have frontage on an existing public street or road and are located
to either side of the proposed private drive. The length of the private
drive may vary, but shall be designed for convenience to traffic,
effective police and fire protection, safety and ease of maintenance.