No ordinance relating to railroads or railroad crossings with streets and other public ways, or relating to the conduct, duties, service or rates of public utilities shall be repealed by virtue of the adoption of this code or by virtue of § 10.15, excepting as this code may contain provisions for such matters in which case this code shall be considered as amending the ordinance or ordinances in respect to such provisions only.
(1977 Code, § 1-2-2)