Dave Oosterhuis discovers the wonder of parking signs and the mathematical relationships found in them.

Mr. Oosterhuis explored a number of solutions for this sign and finally settled on this one.
\sqrt{9} - \sqrt{4} = 7 - 6
This sign is found on Lyndale Avenue, between 38th and 39th street south in Minneapolis, Minnesota. The GPS coordinates are approximately N44.93323 W93.28800. See sign on map!
Ed.: We’ve seen a rash of these signs and may have to stop posting these simple parking or other hour slot signs. They are usually a gimme since the time slices they cover are intended to be equal.

2 responses so far ↓
1 Randy Weiss // Jan 18, 2006 at 1:59 pm
But I do love the scoring rules that make us twist a simple math like this sign has
(9-7) = (4-6), and allows us to hunt for the more obscure relationships between numbers.
2 Road Sign Math Administrator // Jan 18, 2006 at 8:55 pm
We’ll see how it evolves over time.
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