1 thing to note here is that Hoboken is a very very dense city and very hard to drive around in. Due to this many people are already driving extremely slower than other places. Im not denying that this works, but i dont think other cities will have the success that they did for the same fix. For example it's neighboring city Jersey City would be a much better example for this and I hope they get to try, but that city is much bigger than Hoboken and not as uniform with the grid system which makes foe a lot more variablea. Still even if it saves 1 life its still worth it, especially if it only costs around $20 an intersection to find out.