(A) Whenever the locations of major streets are indicated as following existing roads or streets, or section or half-section lines, or other established property lines, they shall conform to such locations. Major streets which follow irregular alignments, or indicate revised alignments, or are not referenced to established lines, shall follow in a general manner the alignment shown on the maps which accompany the Thoroughfare Plan. They shall be subject to detailed surveys of their alignments, which may be made by the City Engineer, the City Plan Commission, or other public agencies, or by the owners of the land to be subdivided. Such surveys shall be subject to the approval of the City Plan Commission prior to the acquisition of land or the filing of subdivision plans affecting such major streets.
('75 Code, § 73.4)
(B) Whenever a major street designated on the plan is to be platted as a part of a subdivision of land, the right-of-way width shall conform to the policies and specified designations and indications in the Thoroughfare Plan and the Subdivision Control Regulations, Chapter 156, provided that where a major street borders a tract of land to be subdivided, the owner of such land shall be required to plat only one-half of the right-of-way width designated for such major street, measured at 90 degrees to the center line thereof.
('75 Code, § 73.3)