Hi General G, just as an FYI and a thank you, I used this intersection in a Workshop Guide that I wrote and put up on the steam workshop here:
https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=2254655213
This Guide looks at and compares the performance of a bunch of different 8-way intersections and, spoiler alert, this intersection fares very well :-)

I couldn't find 7 lane roads myself, but it's not a big deal usually.

Where can you find 7 lane roads?