An artist named Richard Ankrom had the same experience, and so he did what any fed-up Los Angeles driver would do: He created a simple directional tool to help drivers prepare for the 5’s poorly marked hairpin exit. He designed and sewed a Caltrans uniform, cut the shield-like „5“ shape as well as a „NORTH“ from sheet metal, and affixed reflectors to match the existing system. He even gave the signage a nice dusting of L.A. smog sheen so it wouldn’t look glaringly new. On August 5, 2001, in broad daylight, he hoisted a ladder onto Gantry 21300, walked onto a catwalk above one of the city’s busiest arteries, and installed his own freeway sign. …

Ankrom called his piece „guerrilla public service,“ and that it was: His action quickly and seamlessly alleviated millions of headaches for those who were able to make their transition to the 5 somewhat less hairy. (Can you imagine how long it would have taken to petition Caltrans the old-fashioned way?)

Quelle: The Secret of L.A.\’s 10-Year-Old Fake Freeway Sign – Traffic – Jalopnik