Wanted to update on my attempt at U-turn blocking. My changes went live a few weeks ago and I have my first interesting result. The double stack cross road looks good in client and seems to be working well. Surprisingly the first update request was at one of the bow ties I placed. https://www.waze.com/editor/?zoom=5&lat ... TTTTFTTTTT
It appears to be generating a right turn instruction. I assume my attempt at a bow tie was lame and is causing the problem. At this point I would have to say I prefer the dual cross street because if I set the turn restrictions right it will work vs having to get the road geometry just right to prevent this issue.
On the other hand it would appear the true fix would be to collapse this entire street. It is full of no U-turns and may not meet the minimum 5m separation listed in the wiki although the gps traces do show two clear direction paths and it looks technically correct in client.
I will probably just replace the bow ties with dual cross streets and hope for the best any thoughts?