Google has shared an update about its AI-driven mission to reduce wait times, fuel use, and polluting emissions at intersections – and the early indications are that stops can be reduced by around 30 percent, with emissions dropping around 10 percent.
Roundabouts are amazing, but they have 2 drawbacks. Throughput is limited and the size of the intersection becomes larger. Hence, there will always be a lot of places where traffic lights are the better option.
Not great for pedestrians either I think