H.B. Elkins found this mathematically significant roadsign while surveying the brand new I-26 section in North Carolina.

The math here requires no explanation.

This sign is on I-26 southbound just after passing from Tennessee to North Carolina. See sign on map!

Dan Bock brings a second sign from Charlotte, North Carolina. This sign is from the Uptown area of Charlotte. You can see Charlotte’s Hearst Tower in the background of this photo.

Big bonus points for Messr. Bock on this sign find for using the numbers in exactly the order they appear on the sign (top-down, left-right).

This sign is found on S. College St. at the corner of E. 4th Street. The GPS coordinates are approximately N35 13 31.4 W80 50 35.9. See sign on map!

Road Sign Math first-timer Dan Bock finds the first mathematically significant roadsign from North Carolina. Messr. Bock spent weeks hunting for a sign in the Raleigh/Durham area and then decided to head to Charlotte to look for signs. His persistence paid off!

At first glance these signs seem to be independent, and would thus have to be considered seperate numbers sets according to the rules. However, luckily Bock sent a high resolution photo and we were able to verify that there is a metal brace connecting the two signs!

The math hers is nice and simple.

24 + 27 = 51

This sign is found on Albemarle Road, heading eastbound, at the intersection of Blair Road. The GPS coordinates are approximately N35 13 23.2 W80 37 45.5. See sign on map!

Ed.: North Carolina becomes the 25th state to make its way to Road Sign Math. We are half-way to every state in America!