I have a hard time reconciling that with my observations in Europe:
People travel significantly faster than in the U.S., for example on the autobahn
Taxi drivers routinely do things I consider crazy in order to get around old European cities, like driving up on sidewalks, passing on narrow two-lane roads
There are a lot of narrow mountain roads and people seem to drive way too fast to be safe
I’ve never felt like European drivers were “more safe”.
The only differences I can think of that are positive for Europe: