Something I don't see mentioned in this article is the nation-wide adoption of a universal transit-payment system: IC Card (Suica is only one of several companies, but often used colloquially to mean train card). This makes it so easy to board any bus/ferry/train without worrying about setting up 30 different accounts each with its own card system.

I've lived in Japan for 4 years now and it was a bit of a culture shock travelling to Germany where I had to have a different pass/app for the various buses and trains. The U.S.'s public transit buildout is slow but happening, and I worry it's falling into the same trap. I'd like to see a federal bill requiring all private/public transit to use the same universal payment scheme accepted in Japan in order to get federal funding for their projects.