So according to a 30+ year old law still on the books, bicycles in Washington have to be registered like cars https://app.leg.wa.gov/Wac/default.aspx?cite=308-330-540
And have license plates https://app.leg.wa.gov/WAC/default.aspx?cite=308-330-500
@azonenberg If you see something, say something. We need to get these miscreants off the streets.