It's always amazing to me how on this engineering-heavy forum, so many users fail to recognize the benefit some simple engineering can deliver.
Each such moment is one where small incremental improvements can be implemented. When a road from 2009 is re-done in 2024, govts can easily enforce that it must adhere to the 2020 guidelines. Each time a line is re-painted, it can be re-painted to increase safety. Each time a curb or bollard is fixed, it can be fixed to protect pedestrians just a bit better. etc.
Yes, it takes ages. But infrastructure is never finished it's a constant evolution of small steps. It's trivial and cheap (as in: free) to make those steps in the direction of more safety. All that is needed is a will do to so...
You can make a new protected bike lane by just throwing a bunch of jersey barriers on the side of a road. It costs (in relative transportation cost terms) almost nothing.
These sort of things would instantly make the roads dramatically safer.
The only reason this isn't done isn't due to cost, but due to political opposition to having any amount of road space removed from exclusive car use.
obviously it's not a long-term one, as the only real one is to offer effective alternative to all this constant mandatory carmageddon by having walkable/bikeable cities, blablabla.