Ah, Gaylord. Great moving gif. I love those Acme semaphore signals. And the one from "Sunset Boulevard," the intersection of Sunset and and Bel Air Road/Beverly Glen Blvd., no less.
Which is why it pains me to see this:
USC Archive
Some guy (or woman) took out an Acme semaphore! In 1952, at the corner of 23rd and Figueroa, according to the caption.