See the junction before you reach it.
Turn-by-turn navigation that, on approach to a hard interchange, shows the road ahead the way it looks from your car: the lanes to use, the sign to follow, the building you are heading for. One button. Then it gets out of the way.
Concept renderings. These are illustrations of the intended design, not real imagery or a shipping product.
One surface. Four states. The app picks the state, you drive.
Today's maps draw a line on a tilted plan and leave the matching to you. In a dense city, exits stack, lanes split and sign gantries pass faster than a flat map can explain. TrunkFlow Navigation changes what you see, not how much you have to do.
Map
Conventional turn-by-turn. The default, and where everything falls back to when the signal, the network or the phone gets worse.
Look Ahead
The road ahead from just above your car: the lanes to use as a ribbon, the exit sign as a board, the junction's shape and buildings. Armed per trip while stopped; appears on approach; in motion, a ten-second peek.
Junction panel
Beside the map, never over it. The sign's content and the lane strip, generated from data, shown automatically and dismissed when you are through.
Arrival
The destination block outlined and the side of the street named. An entrance pin only where entrance data exists.
Built to be trusted at 65 miles an hour.
The lanes to use, not your lane
Phone GPS cannot tell which lane you are in, so the app never pretends to. The ribbon starts ahead of you, covers every lane that works, and the words say "use the right two lanes", never "you are in lane two".
Data, not image recognition
Lanes, exits, sign text and buildings come from routing and map data. The sign on screen is rebuilt from that data, so it is readable at any distance, including the yellow panel that means exit only.
Voice leads, the screen is glanceable
In motion the screen shows a ribbon, one board, one instruction and the attribution line. No menus, no prompts, no counters. Glance time is measured with drivers, not asserted.
Degrades on purpose
Look Ahead
Position, network, frame rate and phone temperature are all nominal.
Camera raised
Position is less certain. The view pulls back, the ribbon starts farther out, an indicator comes on. No speech.
Map and junction panel
Lost fix, tunnel, hot phone, no tiles ahead. A short tone and "Weak GPS. Follow the voice." Voice stops quoting exact distances.
Instructions and voice
The route is still spoken even if nothing can be drawn.
Transitions have hysteresis and never happen in the last 150 metres before a maneuver.
Two editions, one open core.
The navigation logic, the lane and sign targeting, the safety rules and the renderer interface are open source under Apache-2.0. Imagery licences differ by market, so the app ships as two editions that share that core.
TrunkFlow
Look Ahead on a photorealistic 3D scene built from licensed imagery, with routing, traffic, lane data and voice from a licensed navigation service. Online only, on your phone.
- Free trial, then Pro
- Map, Look Ahead, Junction panel, Arrival
- CarPlay and Android Auto once the licensed car integrations are final
TrunkFlow Open
The same guidance over OpenStreetMap and Overture data: clean stylized 3D instead of photographs, offline map packs, and a build anyone can run on their own servers.
- Free, including Look Ahead and the junction panel
- Pro adds all offline regions and supports the project
- CarPlay and Android Auto first
The repository opens with the first engineering phase. Contributor agreement, trademark policy and bring-your-own-keys guide included.
In the car: the map and the panel, in the car's own templates.
CarPlay and Android Auto get the Map state and the Junction panel, drawn with the platforms' own lane-guidance and junction-image slots. Look Ahead stays on the phone, which stays in its mount showing a single line while the car has the screen.
Where this is going.
Prove the hard parts
Camera, positioning and data spikes on real routes in one city, plus a two-week ride-along study with drivers before a single pixel of Look Ahead ships.
One city, one platform
Map, Junction panel, Arrival and Look Ahead as an armed peek, with the safety test suite from day one. Private beta.
Stores and Pro
Both editions listed, the trial-then-Pro model, the second platform, and car screens as the licensed integrations allow.
More cities, offline routing
New regions as data and spikes allow, on-device routing for the open edition, car screens everywhere.
Drivers, contributors, data partners.
We are looking for drivers in the launch city for the ride-along study, engineers who care about maps and safety, and partners with street-level or 3D data under licences that allow live navigation.
What this page is
A concept preview by TrunkFlow LLC. The renderings are illustrations of the intended design. Feature availability depends on engineering spikes and licensing confirmations that are still in progress. Nothing here is a promise of a shipping date.
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