Have you seen the proposed design for the overpass at 16th Ave and 68 St NE? It's a mess. Not only does it appear to have traffic lights (2 of em, I think), it also makes it so people going N/S on 68th cannot turn East onto 16th, and people going West on 16th cannot get onto 68th. BRILLIANT!!!
http://www.calgary.ca/docgallery/bu/...house_june.pdf