Where uncertainty exists with respect to the boundaries of the various zoning districts as shown on the Zoning District Map, the following rules shall apply.
(A) The district boundaries are either streets or alleys, highways, rights-of-way, railroad rights-of-way, waterways, lot lines, property lines, quarter-section lines, half-section lines, full-section lines, unless otherwise shown. Where the designation on the Zoning District Map indicates the various districts are approximately bounded by street or alley lines, the street or alley shall be the boundary of the district.
(B) Where the zoning district boundaries are not otherwise indicated and where the property is divided into blocks and lots, the district boundary shall be lot lines. Where the designation of the Zoning District Map indicates the various districts are approximately bounded by lot lines, the lot line shall be the boundary of such district unless boundaries are otherwise indicated on the map.
(C) In subdivided properties, the zoning district boundary line of the Zoning District Map may be determined by the use of the scale contained on the map.
(D) Whenever any street, alley, highway or other public right-of-way is officially vacated, the zoning district, abutting each side of such street, alley, highway or public right-of-way shall extend to the center of such vacation and all area included in the vacation shall then be subject to all regulations of the extended district.
