alt Hacker NewsThese things take both time and massive political will.
As somebody living in a city that's quite bike friendly, all things concerned, but still not close to Dutch or Danish levels of biking safety, I'll take any "technical solutions that try to solve social/political problems" I can get to make my commute safer.
Also, anything that makes biking feel safer will make more people try commuting by bike, which in turn increases the political will to change traffic laws and space use. Nothing exists in a vacuum.
I agree you need to get more people commuting by bike. This is in itself creates a virtuous circle of safety. More cyclists means everyone pays more attention to them, meaning it becomes safer to cycle, meaning more people will cycle, repeat. (And ofcourse more political will etc.)
This is btw also why cyclist's rights organizations (e.g. fietsersbond in NL) should be _against_ mandatory use of helmets. Helmets make it less convenient to cycle and reduces perceived safety, in turn reducing the amount of cyclists and as a result _actually_ making cycling less safe (and the vicious circle ensues).
Even only suggesting that it would be beneficial to use a helmet has this effect apparently, hence the organizations are only willing to state that they are "not against the use of helmets".
Just an interesting second order effect I think. You want to always be careful to optimize for the absolute number of safe rides, and not solely for the relative number of safe rides that might significantly reduce the absolute number of safe rides.