[abcanthur]

There (should) be a very small rectanglular sign right below the stop sign that says "4 way" meaning there are stops on all 4 corners. I've always thought these were way too small to notice and I wouldn't be surprised if they were often missing.

[yibg]

Those aren't there (at least not reliably) in California. One of the most frustrating parts of driving here for me too.