[411111111111111]

Their argument is basically what "strong towns" is about. There is a video series on YouTube which goes over the books content if you're interested. There is definitely truth in it and your examples are spot on with proving their point, you're just missing context as it's not really possible to summarize it in one comment.

But besides that: reducing speed from 90 to 70 is most likely not for safety and more about the noise pollution. But i guess you don't care about that, as you're only driving through

[koonsolo]

My street used to be 70 and now it's 50. 70 was fine for me, so I indeed don't care. I care about a car mobility plan, not a car immobility plan.