A "math road sign" is any permanent highway road sign

 for which, you can use ALL

 of  the numbers on the sign and standard math operations to write a true equation.

 

Here are a couple of VERY simple examples (for ordinary folks!) in which the equation is obvious. 

(Some of the signs that have been identified as math road signs are really bizarre!!)

 

Near the  Florida Turnpike Exit at Wildwood

 

 

 

 

 

 

 

      

SB US 441 in Tennessee south of Gatlinburg

 

 

    

 

 

 

 

 

      

 SB I-75 in Florida south of Ft. Myers         

 

 

 

 

 

 

 

 

SB SR44 in downtown Eustis, Florida

 

 

 

 

EB SR 436 crossing Interstate 4 in Altamonte Springs, Florida

Yes, this is a Math Road Sign.  Can you see the equation?

 

By the way, a few rules have been established for road sign math.  

First, any road sign that has one or more fractions is not considered a legal road sign. 

Secondly, trigonometry and logarithm functions  do not apply.

 

Next time you are out driving around, see if you can find some Road Sign Math!!