[Regulator]

Using lights to meter intersection traffic is outdated and leads to the accident you mentioned.

Traffic circles or roundabouts are far safer and more efficient in terms of average flow speed for all but the busiest intersections. Those should have lagging left turn lights with turn bays anyway; this was proven 40 years ago in Arizona.

The town of Billings, Montana has implemented traffic circles on virtually all of their new development areas and it’s a joy to drive there. People learn to use them after just a few trips through. Accidents go down and red light tickets are a thing of the past.

Traffic metering through lighting is now seen as a revenue generator by most cities which are losing money as the bricks and mortar retail stores close. It really is only peripherally about safety.

[gibsonguy]

Speed cameras are even worse and many states have those too.

[IrishBrigade]

‘Traffic circles or roundabouts are far safer and more efficient in terms of average flow speed for all but the busiest intersections.’

anything more than a moderately busy turn circle is a death trap...

[hanamizu]

Traffic circles or roundabouts are far safer and more efficient in terms of average flow

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My town has installed several roundabouts in the last few years. It took several tries before they figured out how to do it, but they now are working pretty well. T-bone crashes are pretty hard to pull off in a roundabout. You have to slow down to enter it, and outside traffic has to yield to traffic in the roundabout. So fender benders might happen but high-speed crashes (unless the driver is blind drunk) are unlikely.