Renovating our traffic death map

We've been regularly updating a map of fatal collisions in the GTA since January, 2008. The data has sadly outgrown the small map it was originally given (we now display 290 accidents with somewhat over 300 victims) and I've been meaning to relaunch it for a while now. The main visible change is that the new map is about three times as big as the old one.

The new map can be found here. A screenshot showing southern Durham is at left.

What patterns do you see in the data? Let us know in the comments.