That’s an important point to remember. Do you think all the car safety regulations were the most effective and achievable solution in the US? Or are there alternatives to achieving safety without resorting to mass transit? Don’t get me wrong, I live in a city and good mass transit would be AWESOME (for safety too). I don’t think that environment is shared by a majority of Americans, and so I’m still skeptical whether extensive mass transit networks across America would ever be economically and technically realistic (i.e. the suburb i grew up in will certainly never have city walkability).