Silver Springs

Brian Alliet found this mathematically significant sign in New York. Upon submission Mr. Alliet suggested that I may choose not to post this sign. On the contrary, these elegant signs that scream their mathematical relationship are the heart and soul of Road Sign Math. Sure, if you get a slide rule and fire up a supercomputer you can find many relationships. But it is signs like this one, signs that smack you on the head with their mathematical connection. Signs that young kids can see and have an "ah ha!" moment. These are the signs that make Road Sign Math what it is!



Solution
Mr. Alliet does the honors.

$$3 + 7 = 10$$

Location
This sign is on NY 39 eastbound just before the split to Castile.