I was looking for a conclusion, but couldn't seem to find it. Anyone? The closest thing I can find is that going from A to C clogs up B, so city planners should create a direct A to C route.
The clever bit is that they are using taxi routes to predict traffic patterns rather than just looking at where the traffic jams happen. They've demonstrated that creating direct routes which correspond to taxi routes does much to alleviate congestion.
The research itself could be interesting, but the article is terribly written and ridiculously dumbed down; I imagine the interesting parts have to do with the identification and partitioning of areas and routes. Shame about the article.