You cannot get a DUI on a bike because the law applies to people operating a motor vehicle. The penalty for riding a bicycle drunk would be a ticket for public intoxication and possibly not following traffic laws.
Answer by David Joseph Rozas
David Rozas is an experienced criminal and immigration lawyer and one of the founding partners of Rozas & Rozas Law Firm. He has been with the firm since 2004, joining his brother, Greg in practice. David concentrates his law practice on criminal defense and immigration.