Road Sign Math

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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Randy Weiss grabbed this mathematically significant roadsign while dodging cars on the highway. The silver car in the picture is dodging him and trying to get off on the exit!

Mr. Weiss enjoyed the wonderful simplicity of this basic square root.
99 - 91 = ( 18 \div 9 ) \times 4
This sign is located [...]

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Randy Weiss found this one while driving on a road trip in Connecticut. The destination that this sign points to could be a great name for a character in a childrens book!

Mr. Weiss enjoyed the wonderful simplicity of this basic square root.
\sqrt{81} = 9
This sign is located on route 9 heading northbound in Connecticut. [...]

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Randy Weiss brings us this mathematical totem pole from New Haven, Connecticut. The large brown building peaking over the inset image on the left is the US headquarters of the Knights of Columbus. The building on the right of the sign in the background is the New Haven Coliseum which has it’s parking structure [...]

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Randy Weiss continued a mile down the road after finding Watch Your Head and is able to find another mathematically significant road sign.

Mr. Weiss breaks from the most traditional way of achieving pi on Road Sign Math with a new approach! Apparently this strategy was suggested to him from his brother.
\sqrt{2} + \sqrt{13-10} \approx [...]

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Randy Weiss puts another sign on the map for Connecticut.

The math here is the kind we most appreciate, simple addition.
10 + 3 = 13
This sign is on northbound I-95 in Clinton, Connecticut. See sign on map!

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Randy Weiss brings us this sign from Connecticut.

This is the first constant sign to come up with Fibonacci’s golden ratio, Phi.
\ln 395 - \sqrt{95 - 76} \approx 1.61998 \approx \varphi
This sign comes from I-95 northbound in Connecticut, a couple of miles west of New London. See sign on map!

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Randy Weiss returns with another mathematically significant roadsign from Connecticut. This sign from Westbrook reminds us that one, is not always a lonely number.

What are the odds that we have two sequential, controversial signs. Within days of each other, but literally on the other side of the globe we get the same math [...]

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This sign, the 40th mathematically significant roadsign is a real “barnburner”! The accomplishments of this 40th sign are many fold. First, it’s only the 2nd constant sign ever found, and the first one that results in pi (see Euler, Anybody, Euler). Secondly, it is the first sign for another state, bringing Connecticut to [...]

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