[makeitdouble]

It requires more attention, brings more stress, in exchange for less critical accidents.

I think this is pretty much a constant in road security, where putting more stress and forcing the driver to pay attention leads to overall better outputs (enforced road bumps, sound inducing road sides, fake people display on crossing paths etc.)

PS: on people not yielding, speed are lower than on straight lines so it's still less problematic than usual non yielding. But I hope your neighbors will get used to roundabouts and navigate them better.

[hinkley]

I have long suspected that what makes roundabouts safe is that they feel like they aren’t. People speed when the lanes are wide as well. There have been some people experimenting with optical illusions that make highways feel less safe than they actually are, such as forced perspective to make obstacles off the highway look closer, which encourages the drivers to slow down and pay attention.