Also one thing to note about the safety of travel types data: it isn't quite representative because certain types of travel are only possible in certain circumstances. One cannot walk nearly as long distances as one can take cars or trains, and the safety distance for both kicks partially because of the relative safety of the long transit times on highways and the like.

Also worth noting as a public policy matter that many of the deaths while walking and in cycles and motorcycles are due to collisions with cars. The US (and to a lesser extent parts of Europe) is highly optimized for cars. But all these will go down if driverless cars take off.