A road trip game
Find a sign. Make the math true.
Spot a road sign with numbers on it, then use every one of those numbers to write something true. These are the signs players have found since 2005, around the world. Tap a pin to see them.
- signs
- 178
- players
- 39
- states
- 42
Minnesota, Iowa and Wisconsin, 18 signs
I-35W at 82nd StreetTyler, Sep 1, 2025
Cancel it all outTyler, Jun 19, 2025
Twin LakesJamie, Oct 22, 2023
Mason MathJamie, Oct 22, 2023
Clear MathJamie, Oct 19, 2012
Village CreekJamie, Aug 15, 2011
LanesboroJamie, Jul 30, 2006
HixtonDenny, Jan 17, 2006
Minneapolis No ParkingDave Oosterhuis, Jan 17, 2006
University MathDave Oosterhuis, Nov 19, 2005
Rolling RockDenny, Nov 2, 2005
CrescoDave Oosterhuis, Oct 10, 2005
OronocoDave Oosterhuis, Oct 9, 2005
Just The NumbersRosalin Chrest, Oct 1, 2005
Wisconsin BorderDave Oosterhuis, Sep 8, 2005
Black DogJamie, Jun 4, 2005
GenesisJamie, Mar 7, 2005
Simple RootJamie, Feb 20, 2005
Not on the map: Bifröst (Borgarbyggð, Iceland)No Standing Down Under II (Melbourne, Victoria, Australia)Begin Blvd (Jerusalem, Israel)No Standing Down Under (Melbourne, Victoria, Australia)Taiwan Identity (Tainan City, Taiwan)Madrid Math (Madrid, Spain)China Root (Qingdao, Shandong, China)Exit 20 To Haifa (Tel Aviv, Israel).
Players
- Jamie38 signs
- Randy Weiss33 signs
- David Slauenwhite21 signs
- Roger Knowles10 signs
- H.B. Elkins8 signs
- Dave Oosterhuis7 signs
- Gerald Thurman7 signs
- Gene Kruckemyer5 signs
- Frank Solensky4 signs
- Geoff Hazel4 signs
Newest first. Every sign posted from the app shows up here.
- I-35W at 82nd StreetTyler, Sep 1, 2025, I-35W at 82nd Street, Bloomington, Minnesota
On the way to the airportJamie, Aug 6, 2025, On the way to the Burlington airport, Vermont- Cancel it all outTyler, Jun 19, 2025, I-35W south at Highway 62, Minneapolis, Minnesota
- Twin LakesJamie, Oct 22, 2023, I-35 near Twin Lakes, Minnesota
- Mason MathJamie, Oct 22, 2023, I-35 toward Mason City, Iowa
IconiumJamie, Oct 22, 2023, Near Iconium, Missouri
OsceolaJamie, Oct 22, 2023, Near Osceola, Missouri
BolivarJamie, Oct 22, 2023, Near Bolivar, Missouri
Fair PlayJamie, Oct 19, 2023, Near Fair Play, Missouri
Fair GroveJamie, Oct 19, 2023, Near Fair Grove, Missouri
SaratogaJamie, Aug 5, 2021, On the way to Saratoga, New York
GreenbushJamie, Aug 4, 2021, Exit 11 to East Greenbush, New York
How to play
Spot a sign
Any sign with numbers: exits, miles, speed limits, route numbers. The passenger takes the photo.
Make it true
Use every number with any math you like. It just has to be true. 12 + 1 = 13 is as good as a square root.
Put it on the map
Your sign shows up here and in the app. Anyone who sees it can find another way to make it work.
There are no points. The fun is in the finding.
The game lives in the app
Everything on this site is in the iPhone app, plus the camera. Point it at a sign, check the numbers it reads, write your math, and post it to the map. Sign in with your email. There’s no password.
- Passenger mode: the camera boxes every number it can read.
- A math keypad with square roots and stacked fractions, and a live “It works”.
- Badges for the road: your first sign, new states, mile markers, and a few secrets.
