Circuits
Create circuit inputs from CSV track data and analyze them in the 3D circuit viewer.
Circuits are reusable SIM inputs that store track data, map orientation, and circuit metadata. A circuit is generated from one lap of logged vehicle telemetry that you upload as a CSV file. Only closed circuits are supported, where the lap starts and finishes at the same place. FastSim uses circuits for circuit-based simulation setup. OpenSim uses Driver Inputs instead of a circuit.
Use circuits when your team needs a track file that can be selected consistently across simulation runs, or when you want to replay a lap in the 3D circuit viewer.
Circuit pages
Create a circuit
Build the CSV from the 4ACE template, upload it, verify the track preview, and set the start angle.
Analyze a circuit
Play the lap in 3D, follow the car, choose a display vehicle, and color the track by telemetry channel.
Choose a page
| I want to | Go to |
|---|---|
| Build or fix a circuit CSV file | Column reference and File rules |
| Upload a file and set the map rotation | Upload the circuit |
| Understand an upload error message | Create a circuit: Troubleshooting |
| Watch a lap in 3D or follow the car | Play the lap and follow the car |
| Color the track by speed, brake, or another channel | Select the track color channel |
| Read track length and average lap time | View circuit details |
| Delete a circuit | Delete a circuit |
Before you start
- Select the correct team.
- You need module create permission to add a circuit. Any team member can open a circuit and use the viewer.
- Prepare one clean lap of telemetry in the template column order. See Create a circuit for the file format.