No ordinance relating to railroads or railroad crossings with streets and other public ways, or relating to the conduct, duties, service or rates or public utilities shall be repealed by virtue of the adoption of this city code or by virtue of § 10.17(D), excepting as this city code may contain provisions for such matters, in which case this city code shall be considered as amending such ordinance or ordinances in respect to such provisions only.
('71 Code, § 1-2-2)