I'm trying to wrap my mind around what that map section is trying to depict.... There is nothing to Bypass in J5/K5 so how would one even legally enter this Road...?
See? We're already fleshing out the rules! "Must have something to Bypass". Got it!
I just wish Walls/Hedges could live (literally) alongside Narrow Streets. Seems like there's enough historical examples there. But Lord, that's some serious rules complication. I wonder if we should have something like the Summer of Code, but for rules. Give some enterprising (and stoopid) lad a few weeks to flesh out the rules for some kind of interesting terrain.
The other semi-relevant thing is that the Narrow Street rules aren't written to specify that Buildings have to be on either side of the street, but I checked last night and I couldn't find an example where there's anything else (wait, I think there's some examples with Woods). Seems... odd, I dunno. As someone who occasionally designs maps, I hate being painted into a corner by terrain. And thus the desire to have Narrow Streets be border-able by Walls/Hedges.
And Another Thing - why do Lumberyards have to be L1 obstacles? Most Lumberyards I've seen are kinda half-height. And all's it would take is waving one's Magic SSR Wand to make it so.