Road Sign Math

Road Sign Math continues to blaze new ground today announcing the addition of an KML interface to bring the great signs of Road Sign Math into Google Earth. If you have not installed Google Earth, go download it and install it. After you have installed it simply launch the Road Sign Math Google Earth [...]

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Road Sign Math newcomer Mark Peal sends in this great mathematically significant roadsign from Middlesex, Vermont.

Mr. Peal makes the math come together amazingly well here. Bravo!
8^2 + 14 + 20 + 2 = 100
This sign is where the I-89 exit meets US-2 by Middlesex, Vermont. See sign on map!

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David Slauenwhite found this great sign in downtown Wellsboro, Pennsylvania, ten miles from the Grand Canyon, not to be confused with the other Grand Canyon.

Mr. Slauenwhite applies two, huge factorials to make this sign work out. However, he takes a 50% scoring penalty by dividing the 660 by itself.
{{13!}\over{10!\times6}}+{660\over660}=287
This sign is found in downown [...]

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David Slauenwhite found this mathematically significant reference marker in New York, near Weedsport.

Mr. Slauenwhite takes some big numbers, and matches them with elegance that is rarely seen with this scale.
34 + 3,071 = 3,105
This is sign is on NY 34 just south of the thruway interchange #40. See sign on map!
Ed.: With this sign [...]

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H.B. Elkins found this mathematically significant roadsign my digging around in his collection of road sign pictures.

The math here is pretty obvious.
\sqrt{81} = 9
This sign is on WV-9 heading toward I-81 in West Virginia. See sign on map!

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Jamie Thingelstad puts another mathematically significant roadsign up for the great state of Minnesota.

The math reveals itself without much effort.
\sqrt{5-1}=2
This sign is found in the first couple of miles after you’ve entereed Minnesota heading north on I-35. See sign on map!

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David Slauenwhite took a very blurry picture of this mathematically significant roadsign. This six-number sign is one of the disappearing breed of Massachusetts signs with distances, a trend that bodes ill for Road Sign Math in the Bay State as they are replacing them with new signs which have route numbers on the square [...]

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David Slauenwhite found this sign by the village of Sylvan Beach, northease of Syracuse on Oneida Lake. New York is well-known as the home of the Baseball Hall of Fame in Cooperstown. However, it is also the home of the Soccer Hall of Fame near Oneonta, and Canastota, on this sign, is home to [...]

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Randy Weiss found this winner while on a trip to Connecticut. The structure in the background is Hartford’s power generation plant. This photograph was taken from I-91, hence the odd angle.

Mr. Weiss strings together some nice addition and subtraction for this one.
91 + 89 – 84 – 84 – 2 = 15 – 5
This sign [...]

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H.B. Elkins found this sign near Fort Blackmore in the southwest part of Virginia.

Very nice math indeed!.
6 \times 12 = 72
This sign is on southbound highway 72 in Virginia. See sign on map!

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