Anecdotally, on my few visits to the US (NY and Colorado), the driving I saw was absolutely atrocious compared to Europe. People were swerving and failing to stay in their lanes on Interstates, everyone was speeding well above the limit (everyone speeds on Motorways, but it seems it's taken to another level in the US). Then you have turn right on red meaning drivers just don't care and turn regardless. Then you have everyone driving massive fucking trucks where you can't see anything from inside.

It seemed every morning I got up and turned on the hotel TV, there was another news about some crash on the Interstate that morning