For all the background leading up to this, see Laws/Caltrans Policies.
Above, a feature page from the Orange County Register, June 2012, about the Santa Ana River Trail. It shows, at top right, the section between Gypsum Canyon Rd and Green River Rd as being open to motorized bicycles since 1980 “to facilitate commuting”.
Want to help? Sign this petition. Get a bunch of moped riding friends to sign it. It will be shown to Caltrans, Orange County Transportation Authority (OCTA), and the Santa Ana River Trail Association of Mayors, and perhaps other authorities. Thank you for your support of mopeds and light motorcycles!