There are huge numbers of laws in place to try and minimise road deaths, including compulsory licensing of people found competent to drive, speed limits, compulsory periodic testing of cars for roadworthiness. So you know the answer to the first part of your question.
Sure - but to really crack down on road deaths, how about declaring a state of emergency that prevents anyone from driving at all? If you understand why that would be stupid, you'll understand why trying to introduce the GFW of China to France is a bad idea.
The WHO puts global road traffic deaths at around 1 million, so if autonomous cars reduces that by a factor of 50, which seems likely, they'd kill less than terrorism.
> There are huge numbers of laws in place to try and minimise road deaths, including compulsory licensing of people found competent to drive, speed limits, compulsory periodic testing of cars for roadworthiness.
Now if only we could apply the same rigour to the process of bringing new human beings into the world.