Road Sign Math

This sign is submitted by Road Sign Math first-timer, and brother-in-law of the founder of the hunt for mathematically significant roadsigns, Dennis Daily. This sign is a hidden tribute to Rolling Rock beer, and it’s references to “33″ on their bottles. Rolling Rock puts this 33 on their bottles as a tribute to the repeal of Prohibition. This mathematically significant roadsign identifies “33″ as a tribute to Rolling Rock.

Excuse the bug splatter on the window!

The math on this sign was made more complicated due to the ruling change regarding rule #4. Previous to that rule, the I35 indicators would be excluded from the math leaving a very elegant solution. However, now these must be included. Luckily we are able to easily cancel them out.

This sign was found in Minnesota heading southbound on I-35 heading toward the Twin Cities. The GPS coordinates are approximately N45 22 54.1 W92 59 32.8. See sign on map!

Ed.: This sign is the 75th mathetmatically significant roadsign!