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by Gibbon1 2245 days ago
I think California DOT tracks collisions and has at least some sort of algorithm to decide when to make changes.

Scary looking link to guidelines.

https://fhwaapps.fhwa.dot.gov/hsipp/Attachments/aa343eab-2cb...

That said I looked at the intersection on google maps. Here it would have have had a stop sign at least or fixed decades ago.