This road closed sign is on CA Hwy-209 in San Diego, California.

```   +---------------------+
|     5 PM - 5 AM     |
| Weekends & Holidays |
|     5 PM - 9 AM     |
+---------------------+
```
```   the numbers are:  1,000  5  5  5  9

the math is:  5 / 5 + 5 - sqrt(9) = log(1000)

observe...
5 / 5 = 1
1 + 5 = 6
sqrt(9) = 3
6 - 3 = 3
log(1000) = 3

[solve for 'n']  n / n + n - sqrt(9) = log(1000)

--- the following was added on 5 October 2008 ---

factorial math:  (5! / (5! / sqrt(9)!))! / 5!) = log(1000)!

more math:  log(sqrt((1000 / (5 + 5)))) + 5 = sqrt(9)!

rsHwyEval:  (1000 / 5) * (5 / 5) + 9 = 209
* This sign was found on CA Hwy-209.

rs42Eval:  (1000 / 5) / 5 + sqrt(9 - 5) = 42
* 42 is the "Answer to Life, the Universe, and Everything"

rsAgeEval:  (1000 / 5) / 5 + sqrt(9)! + 5 = 51
* MathBabbler found this math when he was 51 years young.

base-2 math:  9 - 5 = (1000 / (5 + 5))2

more base-2 math:  sqrt(9 - 5) = sqrt(1000 / (5 + 5))2
```

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 16 October 2007