Sources & method
Source levels
Every piece of data carries a level. When sources disagree, the higher level wins and the other value is noted. Nothing is invented: missing data is shown as PENDING.
| Level | Kind of source | Examples |
|---|---|---|
| 1Official | Championship organisers, circuit owners, official timing and telemetry | FIA, Formula 1 / OpenF1, WEC, IMSA, IndyCar, circuit websites, owner laser scan (The Bend) |
| 2Measured / technical | Laser-scanned simulation models; technical partners and teams | Kunos, Reiter, Fenryr laser scans; aerial LiDAR builds; Brembo braking data; team circuit guides |
| 3Reference | Specialist press and encyclopedic articles with references | Motor Sport, Autosport, Wikipedia infoboxes |
| 4Simulation | Non-scanned AC models, sim reference laps | Community AC track models, Track Titan reference laps |
| 5Community | Forums and fan wikis, last resort only | GTPlanet, Overtake threads, game wikis |
Which level wins, per type of data
| Data | Order of preference |
|---|---|
| Track geometry (line, height, width) | owner scan → simulation laser scan → aerial LiDAR → public maps → other models |
| Facts (official length, turns, lap record, corner names) | official → specialist press → encyclopedic → community |
| Speeds and gears per corner | official telemetry → technical partners (Brembo, FIA) → simulation reference laps |
Data check (geometry accuracy)
Each Assetto Corsa model is compared with the official circuit length (racing line and measured centre line, whichever is closer). Green up to 2 %: reliable (a small gap is normal). Orange 2 to 3 %: acceptable. Red above 3 %: shown with a warning until a better source exists.
Orientation
Maps are rotated to the orientation people know: the scanned line is matched against the official Formula 1 circuit map, or the standard circuit map of the Wikipedia article, by testing every rotation and mirror. Roads and a few circuits without a reference keep an automatic orientation.
Licence of the data
This guide is a private document. Each source is also tagged for a possible public version: publishable (facts, our own texts and layout) or private use (geometry derived from simulation models, F1 telemetry, sim reference laps). A public version would only keep publishable data and draw the maps from open data (OpenStreetMap, public elevation models).