Hi Michael,
That is actually the exact plan I had, and believe me when I say I know they are important and that I did try to include it in the release. I recently found a way to make one on the fly by changing the street width and sidewalk widths on connecting street segments (today in fact). This is not an intentional design, but it does work.
The issue I have currently with using parking for curb extensions (natural place to do it), is how to integrate such an option with the existing UI, integrate with the bicycle lane options, manage to make angled splits/lengths, and make spaces that can adapt to the overall length of the street. It actually not that easy of a problem to solve. I could fill in those spaces with concrete, but I want a more potent solution than just that use case. Ultimately, I decided to start with this rule, and come back to curb extensions at a later date when I had more time. It is my full intention to include them. I even have draft curb extension code where I put it in a sidewalk.
You could divert the Side/Curb Rules to that location and it would work (partially why I included it as an attribute was to preserve that option). However, it will look some what flat and rectangular.
I do have a few questions for you.
When did you download your rule version? After January 6th?
If curb extensions were to be added would you like the options for them near the crosswalk options or near the parking options? I have been pondering this and I am still not sure.
Kind Regards,
David
David Wasserman, AICP