alt Hacker NewsCars are only harmful in dense cities. They work just fine everywhere else. For example in small cities kids can play in the road without fear of cars. It's only in dense cities where they can not.
Dense cities are also the only places where public transit works, so it kind of balances out.
> This is just a small example.
New York city is a small example? New York city is the largest city in the US, and pretty much the ONLY city where you can do this. And the mediocre results (10% is very little) from even NYC show that this will not even come close to working anywhere else.
I live in a low density city and my neighbors are constantly complaining about how fast cars speed by and how it makes it unsafe for their kids.
Dense cities are too congested for speeds to get that high. As an example, I felt safer biking in downtown San Francisco than I do on the country roads near me because people are constantly speeding and on their phones.