It is unlawful for any person to run any locomotive, engine, train or cars operated on rails at a speed greater than twenty five (25) miles per hour in the city, south of 600 North Street, except in the following areas:
A. Between North Temple Street and 300 South Street from 400 West Street to 1100 West Street, in which it is unlawful for any person to run any locomotive, engine, train or cars operated on rails at a speed greater than thirty five (35) miles per hour;
B. Between North Temple Street and 700 South Street from 1100 West Street to the western limits of Salt Lake City, in which it is unlawful for any person to run any locomotive, engine, train or cars operated on rails at a speed greater than fifty (50) miles per hour. (Prior code § 35-2-2)