I think it's more of the local authorities. I was once on a drive from LA to SF along CA-1/Cabrillo Hwy. I got as far as Ragged Pt, where the road was closed

I think it's more of the local authorities. I was once on a drive from LA to SF along CA-1/Cabrillo Hwy. I got as far as Ragged Pt, where the road was closed due to a landslide further up. It had been closed for six weeks. There were no signs announcing this anywhere on the way.