Nice to know, thanks for the feedback mateLike Brandon mentioned above, me to I prefer multiple layout instead of having to rename files in a folder.
About incoming traffic, I have noticed that often, even with one AI passing an other with a 3rd car coming the other way, on SP 237, which I believe might even be narrower than yours, they do not collide most of the time.
And if I space out the start positions by a kilometre or so chances are they won't be in the same place at the same time