Any experiments that explore ways to achieve vehicle and cyclist/pedestrian separation would be welcome for me.

I'm both a cyclist [1] and driver, live in a very popular recreational cycling area, and fear for the very real possibility of vehicle to cyclist accidents on at least a weekly basis.

[1] mostly former cyclist, as I probably have some PTSD from my near fatal vehicle to cyclist accident.

Just curious, have you considered therapy for your crash? I'm in a similar situation and am wondering if therapy could help.

Not really. I've taken up running and swimming instead and am happy pursuing these two disciplines as like the people I train with.

Even if the cycling anxiety is gone, the danger would still be there (and SV drivers are only getting more aggressive and hurried each year). I'm generally a risk averse person and I don't really miss cycling much, given my local road conditions.

That being said I have been told by friends that behavioral cognitive therapy can be a big help.

A cheaper option might be to cycle around the Netherlands on a holiday. But then you really won't want to cycle in the USA.