Curbs and gutters shall be at the discretion of the Municipal Engineer according to the following conditions:
(a) Curbs will be required where the normal drainage cannot be properly handled by side ditches or where requested by the subdivider with the majority approval of the lot owners in the subdivision.
(b) Curbs shall be required on all streets designed to serve areas where the existing or anticipated residential density of the area surrounding the proposed subdivision equals or exceeds three families per acre, exclusive of streets and public grope rties.
(c) In commercial developments or where other similar intensive urban uses exist or are anticipated, curbs shall be required.
(d) Where curbs exist on abutting properties, their extension will be required throughout the proposed subdivision.
(e) Curbs shall not be constructed where pavements are less than twenty-four feet in width. Where curbs are not required, adequate gutters shall be graded and protected by seeding or appropriate surfacing.