On the open road, let this be your only sign. Encourage drivers to be on their guard and alert them to the lack of traffic signs.
Option: 01 A W18-1 warning sign with the legend NO TRAFFIC SIGNS may be used only on unpaved, low-volume roads to advise users that no signs are installed along the distance of the road. If used, the sign may be installed at the point where road users would enter the low-volume road or where, based on engineering judgment, the road user might need this information. 02 A W7-3aP, W16-2P, or W16-9P supplemental plaque with the legend NEXT XX MILES, XX FEET, or AHEAD may be installed below the W18-1 sign when appropriate.