Section 46.61.760 - Riding on bicycles(1) A person propelling a bicycle shall not ride other than upon or astride a permanent and regular seat attached thereto.(2) No bicycle shall be used to carry more persons at one time than the number for which it is designed and equipped.
RCW 46.61.760
1965 ex.s. c 155 § 81.
Rules of court: Monetary penalty schedule-IRLJ 6.2.