[eru]

You don't need to do this overnight.

You can change the rules for newly built (or refurbished) infrastructure only.

Roads don't last forever, so if you change the rules now you'll have the pedestrian friendly infrastructure you want in 20 years, without need a big push.

That's how the Dutch got (and are still getting) their infrastructure to be more human friendly.

[ryukafalz]

Right - we're still building dangerous infrastructure today. Starting to do better now is better than the status quo.

It's like that quote: "The best time to plant a tree is twenty years ago. The second best time is now."