> Roads have to be repurposed to make light personal transportation safe. Take every two-way two-lane and split it into a one-way, with a physical separation between a car side and a personal transport side. Remove parking from the curbs, and put it in the middle so one side can be for cars and the other for bikes, scooters, skaters, etc.
As a cyclist, I'd argue that most separated lanes as implemented are less safe than taking the main travel lane.
These lanes seem to be based around the idea that intersections don't matter for safety, and in practice they tend to greatly increase the number of problems at intersections.
In Austin, TX, where I live, the city had added several fully separated cycle tracks near where I live. The only reason I ever use any of them is if I'm stopping at a location on them. If I'm continuing further down the same road, I instead take the regular travel lane. I do this because so many drivers turn directly into the cycle track without checking for oncoming cyclists. This is despite the signs placed prominently on every one of these to look before turning. (In my view, signs like that are strong evidence that a particular location is dangerous for cyclists. They don't noticeably change driver behavior in my view, and seem to exist more for the city to cover their asses than anything else.)
I'm not the only cyclist who has a problem with these cycle tracks either. A friend of mine has additionally pointed out that the city tends to put the cycle track on the downhill side of the road, but not the uphill side, which is exactly the opposite of what they should do because cyclists go much faster downhill than uphill.
If I had to guess, I'd say the problem comes from politicians and bureaucrats who are not cyclists being the driving forces behind the construction of these lanes. You don't need to talk to too many cyclists before you'll hear my views about cycle tracks.
I'm okay with separated facilities when done well, but the vast majority I've seen are poorly designed and amplify problems.