I would support re-testing on some interval like every 5 years. That said, so much could be done to make the environment safer. Lower speeds, more traffic calming, safer intersections, safer alternatives (public transit, walking, bicycle).

I can't help but think about the failures of basic human-oriented infrastructure when I can't safely ride my bike to the grocery store 2 miles from my home. I don't know what it'll take to change this in our cities, and it feels like an uphill battle when seemingly very few people care about problems like these.