Several major cities in the USA, such as New York, are laudably working towards the same immensely important target, known as ‘Vision Zero’.

To put it bluntly, they cut speed limits, changed street design, increased city tolls, reduced the space available for cars, and increased the fees for parking. It may sound like hell for motorists but it is not only saving a lot of lives, it has made Oslo an even more wonderful and prosperous city than it has probably ever been.
“…In Oslo [in 2019], there were no pedestrian or cyclist deaths in the city, which has a population of 680,000, and no children under 16 died in traffic crashes in the entire country [of Norway]…
The Nordic achievements beg the question: what did they do to achieve such dramatic improvements?
The previous three paragraphs contain excerpts from a longer, excellent article at The Guardian.
Importantly, though, Norway is currently the leading developed nation in the world in terms of reducing road deaths. You can read more about how this result was achieved in: Road Safety Lessons from Norway – Introduction.