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RCW 46.61.710
Mopeds, EPAMDs, electric-assisted bicycles, motorized foot scooters
-- General requirements and operation.
(1) No person shall operate a moped upon the highways of this state
unless the moped has been assigned a moped registration number and displays
a moped permit in accordance with the provisions of RCW 46.16.630.
(2) Notwithstanding any other provision of law,
a moped
may not be operated on a bicycle path or trail, bikeway, equestrian trail,
or hiking or recreational trail.
(3) Operation of a moped, electric personal assistive mobility
device, or an electric-assisted bicycle on a fully controlled limited access
highway is unlawful.
Operation of a moped or an electric-assisted bicycle
on a sidewalk is unlawful.
RCW 46.12.190
Legal owner not liable for acts of registered owner.
The person, firm, copartnership, association or corporation to whom
a certificate of ownership shall have been issued
shall not thereby incur
liability or be responsible for damage, or otherwise, resulting from any
act or contract made by the registered owner or by any other person acting
for, or by or under the authority of such registered owner.
Loaning scooter to your friend is unlawful and they may be cited for taking the scooter
without permission or "joy riding".
Scooter renter maybe cited also.