A. Changes By Ordinance: Changes in the boundaries of the zones shall be made by ordinance adopting an amended zoning map, part of the map or unit of a part of the zoning map, which amended maps or parts or units of parts, when so adopted, shall be published in the manner prescribed by law and become a part of this title.
B. Rules Where Uncertainty Exists: Where uncertainty exists as to the boundaries of any zone shown upon a zoning map or any part or unit thereof, the following rules shall apply:
1. Where the boundaries are indicated as approximately following street and alley lines or lot lines, the lines shall be construed to be the boundaries;
2. In the case of unsubdivided property and where a zone boundary divides a lot, the location of the boundaries, unless the same are indicated by dimensions, shall be determined by use of the scale appearing on the zoning map;
3. Where a public street or alley is officially vacated or abandoned, the area comprising the vacated street or alley shall acquire the classification of the property to which it reverts; and
4. Areas of dedicated streets or alleys and railroad rights-of- way, other than such as are designated on the zoning map as being classified in one of the zones provided in this title, shall be deemed to be unclassified and, in the case of streets, permitted to be used only for purposes lawfully allowed and, in the case of railroad rights-of-way, permitted to be used solely for the purpose of accommodating tracks, signals, other operative devices and the movement of rolling stock. (Ord. 1212, 11-16-1993)