https://translate.kagi.com/nl.wikipedia.org/wiki/Geschiedeni...
This could serve as the blueprint I guess, skip to the part about the 70s and 80s protests. Collective and popular protests helped by an oil crisis, recognizing vested interests in other modes of transportation (cars) that might want to work against your efforts.
> Collective and popular protests helped by an oil crisis
Sounds neither simple nor technical.
Nope, but now the worldwide geopolitical situation is such that it might at least be feasible?
Yes, but again, what's your problem with additionally taking steps to make things safer? Unless you somehow see technologies such as this distracting from creating a safer environment. But this was developed by Skoda, so I doubt that if they hadn't done this, they would have lobbied for more bike lanes instead.
I dont have issues with taking additional steps to make things safer, I have an issue with this solution serving as a vehicle for the marketing of the inevitability of the problem (of cyclists and pedestrians sharing space) by a car manufacturer obviously interested in this problem continuing to exist.