It’s easy, just require speed governors in cars.
Where I live, they’re required in e scooters and e bikes, which are far less dangerous than cars
E-scooters and e-bikes don’t have speed limits that vary by street. In order to implement a governor capable of limiting a car to a 20 mph speed in certain areas while still allowing it to run at highway speeds in others, you’d need either a computer vision system to read the speed limit signs or a GPS paired with a perfectly complete and up-to-date speed limit geodatabase, and you’d need to give either such fallible computerized system control over the throttle (which could be a safety hazard in and of itself, for multiple reasons).
The difference between a e-bike governor and a car governor that can be set to something lower than 70 mph is like this.
Just have a 20 mph limit in the city, and no speed limit outside the city. This would also require moving all the highways outside the city, but I think that would be an improvement.
How’s that going to work? The car limits its speed on the basis of an onboard computer connected to the internet that knows your exact location? Kind of think we should be moving away from that kind of thing instead, cars that spy on you are creepy.
