Hi all,
From my drive, I noticed a peculiar routing suggestion: a U-turn on Boundary Rd here:
https://www.waze.com/editor/?env=usa&lon=-123.02501&lat=49.25933&layers=1413&zoom=5&segments=59502434
This segment is 14m long, which should cause U-turns to be heavily penalized (less than 15m long). Would shortening that 14m segment solve this?
I could also recreate this in Live Map:
Yes. There have been new reports that it actually needs to be shorter than 10m. 
Whether or not it needs to be shorter than 10m, I believe it need to be un-named for the u-turn prevention mechanism to kick in. That segment is named “Grandview Hwy”.
That is news to me… but wouldn’t be shocking. The whole patch/hack is just something while they get the junction box feature to be ready.
Though I’ll add the other thing I am aware of – your angles need to be as close to 90 degrees as possible. I don’t remember the threshold, but if your junction angle meets at something other than ~90 degrees, it can affect the u-turn prevention.
To fix… or not to fix… that is the question.
This soon-to-be junction box feature seems like it would solve this!
Also, would you like to keep my UR there for reference? Or should I close it?