RCWs > Title 46 > Chapter 46.61 > 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.
[1965 ex.s. c 155 Â§ 81.]
Rules of court: Monetary penalty scheduleâIRLJ 6.2.