# Road Sign Math

> Follow <a href="https://micro.blog/roadsignmath">@roadsignmath on Micro.blog</a>.


---

# 2025-09-01

*2025-09-01* — https://www.roadsignmath.xyz/2025/09/01/tyler-found-this-one-driving.html

[Tyler](https://tyler.thingelstad.com) found this one driving up I-35W.

$${(90-82) \over 8 } \times 1 \times 2 = {6 \over {10 - 7}}$$


<img src="https://www.roadsignmath.xyz/uploads/2025/img-8017.jpg" width="600" height="450" alt="">


---

# 2025-08-06

*2025-08-06* — https://www.roadsignmath.xyz/2025/08/06/in-vermont-on-the-way.html

In Vermont on the way to the airport.

$$ { \left( 25 - 1 \right) \over 8 } = 4 - { 3 \over 3 } $$

<img src="https://www.roadsignmath.xyz/uploads/2025/90991d546d.jpg" width="600" height="600" alt="">


---

# 2025-06-19

*2025-06-19* — https://www.roadsignmath.xyz/2025/06/19/strategy-here-is-to-cancel.html

Strategy here is to cancel a bunch of the numbers out and your left with a pretty simple winner. [Tyler](https://tyler.thingelstad.com) got this one. 

$$ \underbrace{\left(  \frac {35} {7} \times 10 + 12 \right) - 62}_0 + 6 + 3 + 2 = 11 $$


<img src="https://www.roadsignmath.xyz/uploads/2025/c4a04bf7e6.jpg" width="600" height="450" alt="">


---

# 2023-10-22

*2023-10-22* — https://www.roadsignmath.xyz/2023/10/22/153816.html

$$ \sqrt { 5 - 1 } = 2 $$

<img src="https://www.roadsignmath.xyz/uploads/2023/ce1919904e.jpg" width="600" height="450" alt="">


---

# Mason Math

*2023-10-22* — https://www.roadsignmath.xyz/2023/10/22/153704.html

$$ 105 - 5 = 136 - 36 $$

<img src="https://www.roadsignmath.xyz/uploads/2023/f2054552bf.jpg" width="600" height="337" alt="">


---

# Iconium

*2023-10-22* — https://www.roadsignmath.xyz/2023/10/22/125959.html

$$ 7 + 12 = 19 $$

<img src="https://www.roadsignmath.xyz/uploads/2023/48b1a5d7fe.jpg" width="600" height="449" alt="">


---

# 2023-10-22

*2023-10-22* — https://www.roadsignmath.xyz/2023/10/22/125900.html

$$ 5 + 1 = 6 $$

<img src="https://www.roadsignmath.xyz/uploads/2023/0492d2d7dd.jpg" width="600" height="449" alt="">


---

# 2023-10-22

*2023-10-22* — https://www.roadsignmath.xyz/2023/10/22/sqrt.html

$$ 10 + \sqrt 4 = 12 $$

<img src="https://www.roadsignmath.xyz/uploads/2023/193f6da5bf.jpg" width="600" height="449" alt="">


---

# Genesis (2023)

*2023-10-21* — https://www.roadsignmath.xyz/2023/10/21/genesis.html

All things have a beginning and the quest for mathematically significant road signs starts with this very sign.

$$ 3 \times 33 = 99 $$

<img src="https://www.roadsignmath.xyz/uploads/2023/img-7222.jpeg" width="600" height="450" alt="">

This sign is on I-94 East as you drive toward the Twin Cities. Each time I would drive by it when returning from North Dakota I would see the math before I would see the cities on the sign. 

"I wonder how many road signs have mathematical relationships like that?"

And thus Road Sign Math was born.

Given the importance of this sign, I pulled over and got a selfie with the sign itself.

<img src="https://www.roadsignmath.xyz/uploads/2023/img-7224.jpeg" width="600" height="450" alt="">

Also see [Road Sign Math Rebooted](https://www.thingelstad.com/2023/10/21/road-sign-math.html)!


---

# Fair Play

*2023-10-19* — https://www.roadsignmath.xyz/2023/10/19/sqrt-sqrt.html

$$ \sqrt { 83 - \sqrt 4 } = 6 + 3 $$

<img src="https://www.roadsignmath.xyz/uploads/2023/56ce8b2bec.jpg" width="600" height="449" alt="">


---

# Fair Grove

*2023-10-19* — https://www.roadsignmath.xyz/2023/10/19/sqrt.html

$$ 11 + \sqrt 4 = 13 $$

<img src="https://www.roadsignmath.xyz/uploads/2023/c36314a605.jpg" width="600" height="449" alt="">


---

# Saratoga

*2021-08-04* — https://www.roadsignmath.xyz/2021/08/05/saratoga.html

Simple math on the way to Saratoga.

$$ 14 + 10 = 24 $$

<img src="https://www.roadsignmath.xyz/uploads/2023/3cb329c817.jpg" width="600" height="600" alt="">


---

# Greenbush

*2021-08-03* — https://www.roadsignmath.xyz/2021/08/04/greenbush.html

$$ 9 + 11 = 20 $$

<img src="https://www.roadsignmath.xyz/uploads/2023/3e556bfbf6.jpg" width="600" height="600" alt="">


---

# Wurtsboro

*2021-08-01* — https://www.roadsignmath.xyz/2021/08/02/wurtsboro.html

We found this sign while driving back from visiting the Woodstock site and driving back to Accord, NY.

$$ 12 + 1 = 13 $$

<img src="https://www.roadsignmath.xyz/uploads/2023/fd1726dfcd.jpg" width="600" height="450" alt="">


---

# Gross Vehicle Weight

*2021-07-30* — https://www.roadsignmath.xyz/2021/07/31/gross-vehicle-weight.html

Some fun math along I-80/I-90.

$$ ( 70 \div ( 90 - 80 ) ) + 13 = 65 - 45 $$

<img src="https://www.roadsignmath.xyz/uploads/2023/b30e0c6d95.jpg" width="600" height="450" alt="">


---

# Phoenix Math

*2021-03-04* — https://www.roadsignmath.xyz/2021/03/04/phoenix-math.html

[Tammy](https://tammy.thingelstad.com) found this amazing Road Sign Math winner on Highway 101 in Phoenix, Arizona! This is the first winning sign found in years to **reboot** the great game of finding math equations in road signs!

$$ 7 + 7 + ( 3 \times 2 ) = 19 + 1 $$

<img src="https://www.roadsignmath.xyz/uploads/2023/image.jpg" width="600" height="450" alt="">