This road sign was discovered while driving north on primed numbered Coconino County Road 3 during Spring Break 2006.

+----------------------+
| <- V Bar V Ranch   1 |
| <- Poor Farm       5 |
| <- West Clear Cr.  9 |
+----------------------+
|  81  |
|  <-  |
+------+
the numbers are...  1  5  9  81

the math is:  1 + 5 + sqrt(9) = sqrt(81)

observe...
sqrt(9) = 3
sqrt(81) = 9

another calculation using three square roots:
sqrt(sqrt(81)) + sqrt(9) - 5 = 1

observe...
sqrt(sqrt(81)) = 3
sqrt(9) = 3
3 + 3 - 5 = 1

[exercise] Pretend the two V's are Roman numerals.
Roman numeral V equals decimal number 5.
The numbers now are:  1  5  5  5  8  91
Find a math equation without using (5 - 5).

Pictures from Arizona...

{open road} {Artie Artichoke} {Pi mileage post} {martian friendly Flagstaff}
{Meteor City} { I-40 Winslow roadsign} {Artie Artichoke again}
Update::2009.04.17

This BARS was selected to be one of the BARS of the Week for week #13 of the spring 2009 semester.

the numbers are...  1  5  9  81

more math:  cuberoot(81 / sqrt(9))! - 5 = 1

rsPhiEval:  (1 + sqrt(5)) / (sqrt(9)! / sqrt(sqrt(81))) = Phi
* Phi is the golden ratio and it approximates 1.61803399

rsAgeEval:  81 - (sqrt(9)! * 5) * 1 = 51
* MathBabbler was 51 years young when he found this equation

rs42Eval:  5! - 81 + sqrt(9) * 1 = 42
* 42 is the "Answer to Life, the Universe, and Everything"

rs42Eval:  summation(5, 9) + sqrt(sqrt(81))! + 1 = 42
* summation(5, 9) = 5 + 6 + 7 + 8 + 9 = 35

rsHwyEval:  81 / 9 - 5 - 1 = 3