Near Valyermo, California, outside of Palmdale, the locals have placed signs where Pallet Creek Road crosses the San Andreas Fault. They picked a really nice spot too, as you have a sag area, fault scarp, and offset streams all easily visible from there. I recommend a visit!
I recently retired after 25 years with the USGS earthquake office in Pasadena. Nobody knows who originally put up the signs, but when the original signs were vandalized in 2018, a few of my friends and I made new signs and installed them in the same place.
Thank you for your work! I had heard about the signs years ago but only recently was able to check them out.