This road is in Altadena, which is not an actual town, legally speaking, but an unincorporated area of Los Angeles County. What makes the road private, I wonder? Can they really keep me out? Do none of my county taxes pay for their roads, their infrastructure?
"Private Road" calls mansions to mind, but up this way you won't find anything fancy. It's quiet, though, unless your neighbor's blasting his stereo with the windows open--which has been known to happen.