[anotherevan]

Actually I think traffic lights are better for very busy and/or very large intersections. But roundabouts are superior to four way stop sign intersections in every way. They don't even need to be all that large.

[leaflets2]

If you web search for roundabouts, you'll notice that they're safer,

eg around 90% reduction in injury crashes is mentioned.

One website:

https://iowadot.gov/traffic/roundabouts/BENEFITS-OF-GOING-IN...