Earlier quoted context omitted.
What you're saying doesn't hold up. Japan: > Road fatalities per 100 000 population: 2.6 USA: > Road fatalities per 100 000 population: 13.8 [0] https://www.itf-oecd.org/sites/default/files/japan-road-safe... [1] https://injuryfacts.nsc.org/motor-vehicle/historical-fatalit...
I would be more interested in the stat per miles driven. I suspect the US still is worse than Japan but a lower ratio. There is no point debating on US car stats, we are the best and worst at everything car related.
If people are driving fewer miles in Japan that means that the built environment is better.
Is there higher usage of mass transit, cycling, and walking in Japan? You bet there is.
And don't give me that "America is oh so big and spread out, Japan is on an island" nonsense. 80%+ of Americans live in urban areas. It once had the largest passenger rail network in the world. This is a matter of intentional city planning and deliberate choices. Not every island nation is as transit-oriented as Japan (just look at the Carribbean or even the UK).
When divided highways were first being introduced globally, Japan's government made an intentional choice to invest in the Shinkansen instead of roadways. That was not an inevitability as there were voices there that preferred road investment.