> Now compare that to regulated intersections, which come at a price of potentially longer delays of course, but in return have much lower mental tax on drivers

> Now compare that to regulated intersections, which come at a price of potentially longer delays of course, but in return have much lower mental tax on drivers. Regular intersections with or without traffic lamps have a measurably higher number of incidents and rate of mortal incidents. Roundabouts have fewer collision points and force drivers into trajectories that lead to less dramatic impacts. https://en.wikipedia.org/wiki/Roundabout#Safety https://en.wikipedia.org/wiki/Roundabout#Safety has a very illustrative diagram https://en.wikipedia.org/wiki/File:Roundabout_intersection_diagram.svg https://en.wikipedia.org/wiki/File:Roundabout_intersection_d... and some cited sources for that claim (claim that fits perfectly with my personal experience living near an urban intersection-turned-roundabout).