We have very few alternatives to driving in the US so we have very lax driver training and testing.

Across the US we have roads and infrastructure that encourage speed right next to decaying pedestrian infrastructure. It's very difficult to get state DOTs to roll back or do traffic calming. They often prohibit the use of bollards or barriers near these roadways.

In a lot, not all, physical changes to the environment could drastically reduce traffic fatalities without surveillance.

Yep, the US has built itself a car-centric society over the last century, and there's essentially no way to change that now without burning everything down and starting over from scratch. They can't make driver training too strict because too many people would fail, and then have no way to get to work, and then who knows what those people would do. They can't turn cities pedestrian-friendly without tearing down everything there now and just the legal hurdles there are immense. I just don't see a way for this to change meaningfully in a lifetime, outside of a few little pockets here and there (like some towns or cities creating extremely limited pedestrian-only zones, which would then need a lot of parking to be useful for people, basically like an outdoor shopping mall).

100% agree

my local middle school has their school zone on:

1. four lane highway

2. dedicated turning lanes

3. major thru-way between shops, apartments, and the rest of the city

4. great visibility

this is a recipe for 50mph. the speed limit is 25mph. If you do the speed limit, you WILL be tailgated. If you do ~35, you're risking a ticket. There will still be people doing 45-50 and weave through the lanes.

also in my town, the main thru-way is a route dating back to the 30s. There are red lights at major intersections and they WILL turn red even if no one is there. They're designed to slow people down. HOWEVER if you speed and run a yellow light, you'll hit ALL the lights green! It shaves significant time off your trip, is easier on your car, is more enjoyable, and requires less attention. It's a system designed to make people speed and run reds.

Where I used to live, I could get from one side of the city to the other in a maximum of 30 minutes. the lights were designed to keep traffic flowing at 30-35mph. It ENCOURAGED you to go no faster, or you'll have to slow down and come to a stop. This also kept traffic flowing so you felt like you HAD to focus on driving. They also did things to encourage bicycles and make things safer for pedestrians.