(1) The provisions of RCW 46.61.687, relating to the transportation of young children as passengers in motor vehicles operated by the child's parent or legal guardian and requiring that the child be properly secured in a manner approved by the State Commission on Equipment, is applicable to the transportation of a child less than five years old on a motorcycle operated by his or her parent or guardian.(2) Until adequate child restraint devices for motorcycles are at some time developed, and then approved for use in this state by the State Commission on Equipment, it is, therefore, illegal for the parent or legal guardian of a child under five years of age to transport that child on his or her motorcycle, just as it would be illegal for them to transport their child in their automobile without an approved device.
Operators of motorcycles and farm tractors operated on the public highways are subject to the Financial Responsibility Act (chapters 46.24 and 46.28 RCW) since the definition of motor vehicles contained in said act (RCW 46.24.010 as derived from § 4 (b), chapter 158, Laws of 1939) and not the definition contained in RCW 46.04.320 (1955 Supp.) defines the motor vehicles to which it is applicable.