A lot of these changes are coming in the wrong order - first you improve public transport, create affordable housing near city centers, and drastically reduce the price (and let’s be frank, increase the quality of) public transport, and THEN you hit car users to push them on to these options. In the current order, they just introduce further hardship to folks who already have a bad time.
It might be a little different in the UK, but in North America step #1 needs to be “first you abolish the low-density zoning restrictions that displace almost everybody far away from the city center to begin with.” It’s not just that walkable housing isn’t affordable; it’s that it’s not even allowed by law to exist.
There is another substantial difference. In Europe you have private spaces to park your car and then roughly as many public parking spots as there are cars. In the US you have about 8 times as many public parking spots as cars exist. The amount of concrete wastelands just for potential cars is incredible.
You could basically scrap ¾ of your parking spaces to create walkable areas with small shops beside the big malls or oversized markets, then do some public transport to those areas (or still drive by car there), just to establich the idea of walking while shopping.
That’s no replacement for getting rid of zoning regulations but a realistic start, where changing the zoning (even when the regulation vanish) would need a generation or more to change.
