It is unlawful for any person operating a bicycle upon any of the streets or highways of the city to carry another person on the same bicycle; provided, however, that this restriction shall not apply to tandem bicycles or other bicycles equipped for two or more riders. (Ord. 5923 § 1, 2005; Ord. 2753 § 1, 1973; 1957 code § 5.08.180.)