Road Sign Math

One year ago Road Sign Math was a brand new “feature” of the Internet. With two, wimpy signs from Iowa the game of hunting for mathematically significant roadsigns was started. We really thought that Road Sign Math would be an esoteric site with few visitors. If wildly successful, we thought we might get 30 [...]

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We are excited to release the 3rd edition of the rules for Road Sign Math on the eve of the first anniversary of the launch of the game. This 3rd edition clears up some minor confusion and provides further clarity around certain areas. The biggest change is in the way the elegance score is [...]

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Families that calculate together, stay together. This is proven out by the extended family of the Bernard’s. This sign is submitted by Road Sign Math first-timer Thomas Brennan, the uncle of Jim (Jr.) Bernard. With this one sign Mr. Brennan will surely start a competition in the Bernard clan. He has deftly avoided the mass [...]

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Roger Knowles found this mathematically significant roadsign combination while driving around San Jose.

Here we see a return of the most popular pi approximation on Road Sign Math — 22 over 7.
{{880} \div {280}} \approx 3.141 \approx \pi
This sign is located on I-280 in California. See sign on map!

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Roger Knowles brings this whopper of a sign from the highways of San Francisco.
Click on sign for larger image.
Mr. Knowles whips up a storm of mathematics to get the first three decimal places of pi. Note, the very small numbers in the carpool information are 5 to 10, and 3 to 7.
{{880 + 600 [...]

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Roger Knowles discovered this very simple mathematically significant road sign in his home stomping grounds.

Mr. Knowles was a little embarrassed by the simplicity of the math, but he was happy to take the points.
\sqrt{4} = 2
This sign is found in California I-80 westbound at the Cummings Skyway exit. The GPS coordinates are approximately N38.04325 [...]

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The newest release of the most excellent Firefox browser was just made available, version 1.5.0.1. This release introduces a crash condition when loading the fabulous jsMath library that Road Sign Math uses to display formulas and equations. This bug has been reported to the Firefox team and hopefully they will fix it soon.
In the [...]

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