Broken image, but I did notice the intersection in the original picture. Your crossings are fed by the special SPL phase, right? If so, I'm still kind of at a loss as to why this might be happening. If boat doesn't pop in here soon you might try PMing him, he'd have the best idea as to why this might be happening. I could write out how I might set the intersection up if I were doing it, but I'm not sure how you want the actual intersection to interact.