Gravel Road sign
The pavement ends ahead and the road continues as loose gravel or dirt. Reduce speed before the surface changes, since traction drops the moment the pavement does.
Marks the point where a paved county or forest road turns to unpaved surface, common in rural and mountain areas far from a town center.
How to recognise it
This sign is a diamond stood on its point in yellow, the warning colour. Yellow diamonds telling you what the road is about to do. They are advisory rather than mandatory, but ignoring them is how people end up in ditches and how examiners end up failing you.
What the test wants you to know
Braking distance on gravel runs noticeably longer than on dry pavement, and the common mistake is braking hard right at the transition instead of slowing down before it while full grip is still available. Rural permit tests weight this sign heavily since unpaved roads are still common outside cities.
The sign people confuse it with
Gravel Road gets mixed up with Rough Road more than any other pairing in this category. Put them side by side and the difference is obvious, which is exactly why it is worth doing once rather than meeting them cold in the exam.
Practise it
Reading about a sign is not the same as recognising it in half a second with an examiner watching. Every state road signs test on this site shows the sign and asks you to name it, then shows four faces and asks you to pick the right one.