Artifacts
30 files from Road Sign Math, kept as they were.
The iPhone app #
The game from signing in to posting a sign, from October 30 and 31, 2026, the first two days of building it, on the simulator against a local copy of the server or the live one, with the 16 signs from the blog. The sample sign is one the app draws itself, for a simulator with no camera.
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The first app icon #
The math from the Twin Lakes sign, √(5 − 1) = 2, on a green guide sign.
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The sign-in email #
Under a “Driving + Math = Fun” sign, a button that signs in on the iPhone and a six-digit code to type instead. The code and link here are examples.
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Home #
The Latest feed, newest first: Tyler’s I-35W at 82nd Street sign from September 2025, its math, (90 − 82) ÷ 8 × 1 × 2 = 6 ÷ (10 − 7), and a button to find another way.
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The Map #
The 16 signs as pins and clusters across North America, filtered by year, with a search for a town, a number or a person.
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A sign #
“On the way to the airport,” Jamie’s sign from August 2025 near Burlington, Vermont: its photo, its math, (25 − 1) ÷ 8 = 4 − 3 ÷ 3, and the ways found so far.
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Capture #
The camera in Passenger mode, after a shot of the sample sign. Every number it read has a yellow box, and it says it got five.
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Check the numbers #
Every number the camera read on the I-35W sign, boxed in yellow on the photo and listed below to keep or drop. It read 12, including the 902 on the minivan’s plate.
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Checking the numbers #
Fixing one number while checking what the camera read, with a close-up of where it read 82 in “82nd”. Letters next to a number are fine, so 7B counts as 7.
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Solving it #
The math keypad on the sample sign, with roots, powers and factorials. (90 − 82) ÷ 8 = 1⁷ uses every number on the sign, and the app says “It works! Both sides make 1.”
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Post it #
Naming the sign, with a suggested name, and its place, Bloomington, Minnesota, taken from the photo.
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Posted! #
The sign is on the map and the website, and two new badges came with it, Square Root and States: 2.
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Badges #
The shelves of road-sign badges, Firsts and Places, each with how it is earned and, once it is, the day and the sign that earned it.
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A player’s page, in dark mode #
Jamie’s page in the app, with 13 signs in 5 states since 2021, his badges, and his signs as photos.
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Find another way #
Writing a second way on Tyler’s I-35W sign: (90 − 82) × 2 = 10 + 6. It works, and three numbers sit this one out.
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A profile photo #
Fitting a picture of a road and a sign into the circle that goes beside a player’s signs and on their page.
The website #
The new roadsignmath.xyz on October 31, 2026, where every sign posted from the app shows up, with no sign-in.
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Home #
“Find a sign. Make the math true.” The map of every sign on the US, with a card for Minnesota’s two signs, and who’s playing: Jamie, Tyler and Tammy.
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A sign #
Tyler’s I-35W at 82nd Street sign on the website: the photo, the math, the ways found so far, the numbers, a map pinned on the town, and nearby signs.
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A player’s page #
Jamie’s page on the website, with his badges and his signs on the map.
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Join the beta #
The website’s section for the app, with a link to join the iPhone beta through TestFlight.
Logo development #
Concept sheets from Jamie’s design session with Codex on October 31, 2026, followed by the approved five-icon collection and matching wordmark. The green Radical Route mark became the default direction, with four alternatives for players to choose from.
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The first three directions #
Radical Route combines a square-root symbol with an exit arrow. Genesis Sign uses 3 × 33 = 99 from the first road sign. Math Crossing puts crossing roads inside a yellow diamond.
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Green and yellow #
Radical Route in highway green and sign yellow, alongside an upright crossing symbol. Jamie chose green for the default icon and kept yellow as an alternative.
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Division, factorial, and four operators #
Three more alternatives: a division symbol with an exit arrow, a 3! route shield, and addition, subtraction, multiplication, and division on one green sign.
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The polished collection #
Highway, Sunshine, Division, Factorial, and Four Ways, redrawn as vector artwork. The sheet includes the matching Overpass wordmark, light and dark logo treatments, and checks at 64, 40, and 24 pixels.
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Highway, the default icon #
The white Radical Route mark on highway green, combining a square-root radical with an exit arrow.
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Sunshine #
The same Radical Route geometry in deep green on sign yellow.
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Division #
A division symbol whose horizontal bar becomes an exit arrow, in deep green on yellow.
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Factorial #
White 3! lettering inside a green route shield on yellow.
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Four Ways #
Addition, subtraction, multiplication, and division inside a white sign border on green.
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The matching wordmark #
The Radical Route mark beside Road Sign Math in Overpass, the highway-inspired typeface already used by the app.
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Identity artwork and exports #
The complete design package: five square PNG icons, editable SVG masters, separate layers, wordmarks and logo arrangements, size previews, and the Overpass font with its license.
