Which state has the best signage?

[US 89]

Virginia signs its secondary routes extraordinarily well, even better than West Virginia.  Its primary routes are signed well outside of independent cities but they lose marks for having a high number of shield errors.  Signage varies by VDOT District for things like reassurance markers and how primary routes are signed from secondary routes.

North Carolina does not sign its secondary routes in a way that they can be easily used for navigational purposes outside of the SR 10xx routes, as the markers are too small to see unless you are practically stopped.  Their use of the signs telling you where the road goes and how far used to be ubiquitous and that made up for the hard-to-see markers a little bit, but some NCDOT districts have all but gotten rid of these as well.  Primary signage is good though, although in SE North Carolina there is a lack of directional banners.

South Carolina generally does a good job with secondary signage, though it is harder to navigate at speed than Virginia since SC does not have advance markers for these.  Primary signage is mediocre...often no JCT signs in advance and sometimes no sign at the intersection itself either.  Large portion of primary markers have no direction banner.

Missouri also stands out to me as having great secondary route signage.

I wish SC signed its secondary routes better. The markers are also too small to read clearly, and you can't really use them for navigation.

[dfnva]

Virginia signs its secondary routes extraordinarily well, even better than West Virginia.  Its primary routes are signed well outside of independent cities but they lose marks for having a high number of shield errors.  Signage varies by VDOT District for things like reassurance markers and how primary routes are signed from secondary routes.

The signing of secondary routes definitely varies from district to district and even within counties in a district. The Northern Virginia district is definitely the worst at signing secondary routes, particularly in Prince William County (Though the county does a decent job of posting SR routes on street blade signs- the only way I discovered that SR 4000+ routes exist in the field, though the county or VDOT should do a better job posting where a SR turns, like on SR 619 and SR 646) and, to a somewhat lesser extent, Fairfax County (ex: Major intersections on Rte. 286 do not have secondary route signage, such as Lee Chapel Road, Old Keene Mill Rd, and Burke Lake Rd). The best districts for signage would probably be the Culpeper and Staunton Districts for their consistency.