Repost, just in case you didn't see this in the commuting forum. This thread was posted in multiple forums and apparently "moderated" to this one.
I'm guessing that's actually CVC, as in california vehicle code, the entirety of which is available online at
www.dmv.ca.gov.
As others have already pointed out your use of the left turn lane should have been perfectly legal, but as you'll see if you continue reading that doesn't even matter in this case 'cause officer not-so-friendly screwed up the citation.
The section you quoted above, if in fact that's what is actually written on the ticket, has nothing to do with left turn lanes, or even bicyclists for that matter.
See for yourself:
http://www.dmv.ca.gov/pubs/vctop/d11/vc21966.htm
"21966. No pedestrian shall proceed along a bicycle path or lane where there is an adjacent adequate pedestrian facility."
Show that to the judge and ask him what it has to do with you making a perfectly legal left-hand turn.
-Trevor