I agree completely with the MUCH MUCH "better policing and prosecution of this kind of behaviour."
The problem as I see it is that "this kind of behaviour" is everything from very serious crimes (which have been a "top priority", allegedly, for decades yet things go backwards), to low level harrassment which would be very hard to criminalise let alone prosecute (how do you prosecute a man for staring at your breasts as you run by)? How can (in practical terms) you stop unwanted approaches without criminalizing speaking to strangers?
Even if misogynistic street conduct were criminalized, and significantly dealt with, and even if rape conviction rates became ten times higher and rapists got 30 years minimum, there would still be crime. And I suspect that there is an argument to be made that rationally women should ignore the risks and just go run if they want to run, but that in the real world our risk assessment is far from perfect and even with much much higher conviction rates and better laws plenty of women would be saying just the same thing they are now "I know I'll probably be OK, but I am not willing to take the risk".
Interesting that both of your examples involve cars (which have number plates, and are much more heavily regulated than pedestrians or cyclists) and involve changes that almost certainly benefit the driver as much if not more than other people.
Can you think of any examples of where government has massively changed behaviour in a way that is unrelated to cars, and which is unrelated to personal health and safety? The only other example I can think of is smoking, but the behaviour of smokers has only been changed because of the massive health benefits in not smoking, and the high and increasing cost of smoking.
The idea that low level street harrassment can be made completely socially unacceptable seems very difficult to acheive, not least as plenty of it goes on with alone males who have no friends there to judge them for their behaviour, and other behaviour (a small group of teen boys approaching a small group of teen girls on the street, for example) which could be 100% or 0% welcome, or anywhere in between, dependent on the circumstances.