“Together we’re advancing initiatives focused on creating safer, more efficient travel options for all modes of transportation, from vehicles to bicycles to pedestrians,” Dave Ambuehl, the chief deputy district director of Caltrans, said in a news release.
https://www.sfgate.com/travel/article/new-intersection-project-first-kind-bay-area-19901199.php
I think you aren’t particularly familiar with how drivers treat traffic lights on multi-land thoroughfares.
And that intersection is setting up collisions to primarily be head on.
That’s just your status quo bias.
This video explains how it’s remarkably better.
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Then it’s still not a design problem, but a problem that traffic rules are not enforced.