jev_fsd
JEV AI Model Demo with FSD
How it uses Jev
Jev FSD is a driving simulator built on real OpenStreetMap streets. Pick a destination and the car drives there through traffic, stop signs, and traffic lights. The driver is Jev, a "System One" model from TypeSafe AI: instead of writing text, it answers typed multiple-choice questions with probabilities, in about a tenth of a second. A panel shows exactly what the model was asked, what it answered, how sure it was,…
Highlights
- Real streets. Kitsilano, Vancouver, by default: streets, lanes, speed limits, one-way streets,
- Two drivers, one car. Switch between the Jev model and a hand-written Rules driver. Both drive
- Nothing hidden. Every decision can be inspected, copied as a curl command, or saved. Collisions,
- A benchmark. A reproducible suite of drives scores any driver on safety, comfort, lane keeping,
- No build step. A small Python server and a browser. Three.js loads from a CDN; there is no
Getting started
You need uv, which provides Python 3.10 or newer and the one dependency, and a desktop browser with WebGL.
- Languages
- JavaScript 59% · Python 36% · CSS 2% · HTML 2%
- License
- MIT
- Last activity
- Sep 2026
- Added
- 2026-09-24
- Stars at snapshot
- 2
- Status
- Community listing
Source: community catalog. Details and metrics reflect the published community snapshot and are not a performance endorsement. Documentation details extracted from GitHub · the README.