This image shows more clearly the height of the road above the ocean, and the sheer drop from the road edge to the water. The thin grey line at the upper right of the image is a portion of the guard rail for the outer lane of the road. This railing is not present continuously, however.
Highway Color by Bolty
The description on this card is the same as the previous posting:
CALIFORNIA’S SCENIC STATE HIGHWAY NO. 1
This picturesque highway is safe to drive, though for over 66 miles there isn’t a straight or level stretch of road more than 100 yards long.
–This is a common condition along the highway both south of Carmel, California, and north of Bodega Bay, where the road is at the cliff edge for many miles.
This card likely dates from the 1950s.