The R3 series of signs (all 90 or so of them) are complete and posted on the Manual of Traffic Signs website at http://www.trafficsign.us/r3.html .
Quite a few of the PDF files (mainly the HOV signs) are user-editable. 🙂
Apologies for taking nearly a year to get them done, but it was quite an undertaking to get them just right, and to add all those new signs tacked on in the 2009 MUTCD.
I’m hoping that subsequent sections don’t take as long. I’ll be adding them as I get the time to draw up the signs and generate the files.
Enjoy, and let the celebrations commence (heh).