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.

This sign is found in downown Wellsboro, Pennsylvania. See sign on map!

Ed.: David Slauenwhite would have had the first sign to ever score over 20 points, however, the 50% scoring deduction took him way down from the 20.1 points he would have had.

David Slauenwhite brings us a huge sign from Pennsylvania! This sign that is barely visible behind all the numbers presents a slew of opportunities. The scenic lumberyard in the background is Ron Baltzley Hardwoods, a member of the Northern Tier Hardwood Association.

Mr. Slauenwhite nails Euler to 4 decimal places on this sign! However, he takes a dreaded 50% deduction in his score for this sign for using cancelation math (note the 660 – 660). Due to a judging error this sign was originally penalized for cancelation math, however, it was later determined to be incorrect.

This sign is in Covington Township, Pennsylvania at the junction of SR660 and SR2005. See sign on map!

David Slauenwhite brings us this mathematically interesting sign from Mansfield, Pennsylvania.

The math here is nice, and not immediately obvious, but avoids some of the complexity that Mr. Slauenwhite is prone to use.

This sign is located in Mansfield, Pennsylvania. See sign on map!

David Slauenwhite wishes farewell to 2005 with this sign containing 2,005. He also returns to the complexity that he finds so fun and interesting, leaving the simple addition and multiplication of his recent winners at the rest stop for an adventure into familiar territory, at least for him!

The math on this sign required some significant crunching, but comes up with a nice constant approximation.

This sign is located in Blossburg, Pennsylvania. The GPS coordinates for this sign are approximately N41.68278 W77.06556. See sign on map!

David Slauenwhite brings this mathematically significant road sign near the summit of Bloss Mountain in Pennsylvania. This sign brings a combination of different signs together along with some of Mr. Slauenwhite’s signature “little white signs”. There is a uniqueness to this sign as well since the segment numbers, which are indicated on those white signs, typically are in increments of 10. This sign is unusual which a segment numbered 4. The 4 was assigned when the western end of SR 2023 was relocated and extended to make room for the new US 15.

The math in this sign is unique for Mr. Slauenwhite. There is no trigonometry. No square roots. Just straight forward simple arithmetic.

Here is the sign at the summit of Bloss Mountain. This sign exists because of the persistence of Mr. Neil Fiske who eventually prevailed over PennDOT to get one erected.

This sign is at the intersection of Mountain Top Road and Old Route 15 near the summit of Bloss Mountain in Pennsylvania. The GPS coordinates for this sign are approximately N41 37 20.8 W77 07 02.5. See sign on map!

David Slauenwhite brings another “Little White Sign” to Road Sign Math. This one is from the far reaches of rural Pennsylvania and a little village called Covington. While the sign is little, the math certainly is not.

Slauenwhite introduces a new trigonometry function with this submission, secant, never before used in any sign.

This sign is at the intersection of Canada Road and West Hill Road in the sleepy little village of Covington, Pennsylvania. The GPS coordinates for this sign are approximately N41 44 40.1 W77 04 50.9. See sign on map!

The father of the “little white sign” brings another one to Road Sign Math. David Slaeunwhite submits this sign from rural Pennsylvania that shows wonderful creativity as well as the native farming background of Pennsylvania.

Slauenwhite does something very creative in the math on this sign, and something that has never been done on Road Sign Math before. He needed a 1 to get from 1,009 to 1,010 and his solution is wonderful.

This sign is found on the south-side of Liberty, Pennsylvania, on the old US 15 that was renamed to SR 2005 in the 1990′s. The GPS coordinates for this sign are approximately N41 33 17.0 W77 05 48.0. See sign on map!

This truly whacky sign comes to us from the “father of whacky signs”, David Slauenwhite. Messr. Slauenwhite was the first to bring constants to Road Sign Math, and the first to bring trigonometry and he returns with this zinger of a sign.

At first glance David was excited to see this sign, thinking that there was a very elegant arithmatical solution to it. Alas, it was short by 1. (Figuring that solution out is left as an exercise to the reader.) In fact, that solution would have been easily provided if the highway department would have been proper enough to indicate Blossburg’s actual distance, which is just far enough away to deserve that precious 1.

You could wonder why Blossburg was denied that “1″. It is a city with a rich heritage, mainly in the coal industry. For all that it has done for the country, you would think it would be provided it’s “1″.

David was not deterred though, and remembered that 240 is a multiple of 30 and with some trigonometry and a 30-60-90 triangle provides the very exciting solution.

This sign is at the US-15 exit for Blossburg in Pennsylvania. The GPS coordinates are approximately N41 40 26.0 W77 04 22.0. See sign on map!

Ed.: The box in white is a zoom of the little white signs in the original image. This sign follows a continuing trend of Messr. Slauenwhites. He has developed an expertise around these very small signs typically with very large numbers on them.

David Slauenwhite makes a return with another mathematically significant roadsign from Pennsylvania. That’s 13 signs for Pennsylvania now. This submission also marks the second using these odd little white signs that are found in Pennsylvania (see Little White Sign). These signs have the potential to bring very intersting math to the game.

The math here is a little deceptive. It’s clear to even the casual observer that 2005 – 2002 results in 3, but how to get 3 out of the rest of the numbers!

This sign is found on the south-side of Liberty, Pennsylvania, on the old US 15 that was renamed to SR 2005 in the 1990′s. The GPS coordinates for this sign are approximately N41 33 21.0 W77 05 51.0. See sign on map!

David Slauenwhite submits this very elegant pi sign from rural Pennsylvania. There isn’t much to be found on the Internet about Trout Run or the location that this sign was found, Steam Valley Mountain. That’s unfortunate because they have such great names. It seems like an ideal location to have wonderful childhood adventures. Williamsport however happens to be the birthplace of little league baseball. That is certainly nothing to scoff at.

This is the third pi sign found and is the simplest to date. It achieves the constant in the same way that Slice of Pi does, but it gets there more directly.

This sign comes US 15 South at the junction of PA 184, atop the Steam Valley Mountain. The GPS coordinates are approximately N41 27 29.5 W77 07 55.6. See sign on map!

Ed.: This is the fiftieth sign on Road Sign Math!