A. Centerline of Streets. Where boundaries are indicated as approximately following the centerline of streets or alleys or the lot lines, such lines shall be construed to be such boundaries.

B. Unsubdivided Property. In the case of unsubdivided property and where a zone boundary divides a lot, the location of such boundaries, unless the same are indicated by dimensions or legal description, shall be determined by use of the scale appearing on the official zoning map.

C. Vacated Street. Where a public street or alley, or any portion of the same, is officially vacated or abandoned, the area comprising such vacated street or alley shall acquire the zone classification of the property to which it reverts.

D. Streets and Railroad Rights-of-Way. Areas of dedicated streets or alleys and railroad rights-of-way, other than as designated on the official zoning map as being classified in one of the zones provided in this zoning code, shall be deemed to be in the adjacent zone, and in the case of streets or alleys, 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.

E. Divided Lots. If a zone boundary divides a lot into two parts and the portion in one zone is of such size and shape that no part of the portion is more than 50 feet from the nearest point on the zone boundary, then that portion may be used for any purpose permitted in the zone established on the remaining portion of the lot provided: