@onewheelmx yes, that's a bill from 2015, which among other things, added CVC 313.5 defining "electrically motorized boards". But you need to look up each of those changes in the actual statutes they created or amended in the Vehicle Code itself, to fully analyze them. The current California Vehicle Code can be found here:
Some of the items in that old bill from 2015 may have been changed in the interim. Also, cross referencing of surrounding sections, other codes, and court appellate decisions can come into play. If it were as simple as looking at a bill passed 4 years ago, anyone could be a lawyer.
Good luck with your legal analysis. BTW county law libraries are available to the public. In fact, they are intended for the public, not just lawyers.
-ps there is a FB group called Onewheel Legal Freedoms, that discusses these issues. But pay attention to the sources cited, and what state each discussion is about. It's not just California info.