These signs are found on Cedar Street in Millville, New Jersey just as one pulls into Lakeside Middle School.

Zoom of the bottom part of this sign shows an extensive array of numbers.

The math here is borderline crazy to deal with the huge number of numbers in this sign. Nineteen numbers in all may be a new record!

Ahhh, yeah. Right. Let’s reduce this down and see if it really works.

Whew, that’s a trip through math class!

Todd Southworth brings this huge sign assemblage from Pomona, California.

Mr. Southworth freely admits that he shot this photo and figured the math out later. This solution wasn’t an epiphany while going down the road at 70 miles an hour. He noticed the 71 + 10 first, realizing that was 81 which is easily 9 via a square root. The rest came together nicely! Hats off for the use of the factorial! !   !     !

This sign is on on eastbound I-10 at the Kellog Interchange where I-10, CA 57 and CA 71 meet in Pomona, California. See sign on map!

Samer Adra storms onto the scene with his first sign from California.

The math works out nicely via this solution.

Samer had originally submitted this sign as a sequence sign, however, we couldn’t justify it. The sequence would have been….

This sign is on on I-80 heading west from Reno to Sacramento. See sign on map!

Geoff Hazel sends this very grainy, barely legible, but certified photo of a nice simple sign assemblage in Bellevue, Washington.

Umpty dump…

This sign is at exit 17 on I-90 in Bellevue, Washington. See sign on map!

Steven Francis recently discovered Road Sign Math and has been searching for valid signs since, and found this one to send in for his first winner. Mr. Francis is a math teacher, so buckle your seat belts fans, it’s going to get a little crazy.

Mr. Francis submits this formula as the winner for the sign. It’s well done, exercising a rare use of exponents.

Mr. Francis also identified these formulas as straightforward ways to make the sign work.

Now Mr. Francis decided to fire up the engines and have some fun. This formula doesn’t seem to violate any rules, but even Mr. Francis was worried that it didn’t match with the spirit of the game.

Reasoning this out…

Whew! Extra points if you are actually able to follow that!

This sign is found at the end of a service road that meets Passons Boulevard in Pico Rivera, California between the Sheriff’s station and El Rancho high school where Mr. Francis works. See sign on map!

Mark Peal sends this sign from ski country in Vermont. The words are clear enough, but additionally the arrows let you know that everything is uphill from here.

Mr. Peal brings it all together in a straightforward manner.

This sign is in the Irasville neighborhood of Waitsfield, Vermont, southbound on VT-100 approaching VT-17. See sign on map!

H.B. Elkins ticks off another state in the chase to put all 50 states on the map. This one is a squeker, almost in Arkansas but landing on the Missouri side.

Some quick math from the bottom up with a square root gets this one in the door.

\sqrt{25 – 9} = 4

This sign is at on US-71 southbound near the Arkansas border, just outside of Pineville, Missouri. See sign on map!

Geoff Hazel puts Washington on the board with this sign assembly that is overloaded with a variety of 13s! There are less than 10 states remaining to be posted in Road Sign Math.

Some nice mathematics here from Mr. Hazel. If you are having a hard time seeing the 35, it is in the small yellow bar in the sign that is on the median. It is the advised speed limit.

13 + 13 + 13 – (8 \div \sqrt{4}) = 35

This sign is at exit 13 on I-405 northbound in Bellevue, Washington. See sign on map!

Robert Lee, a first-timer to the wonderful game of mathematically significant road signs puts Mississippi on the map with this great winner from Pontotoc, Mississippi.

This is one of those great signs that just reaches out and smacks you in the head with it’s mathematical elegance.

9 + 6 = 15

This sign is on highway 15 northbound at Spur Street. See sign on map!