Getting Started

A circuit starts from one small form, and everything else in the editor builds on the choices you make there: how much floor you have, what scale you’re building at, and which kind of circuit you’re laying out.

Starting a circuit

Click New Circuit and you’ll get a short setup form before the canvas opens. Pick a circuit type — Competition, Touge, or City — up front, since it decides what shows up later in the elements panel: judged zones and a pit only make sense on a Competition course, a rest stop only on Touge, and so on. See Course Elements for what each type actually offers.

Next comes the area itself: a plain rectangle sized to whatever floor you’re building on — a table, a garage, a hall — or a custom shape you draw as a polygon, corner by corner, typing each side’s real distance as you go. Set the RC scale you’re building at too; it drives the lane widths and turn radii the editor checks your layout against, and you can change it later from Circuit settings if you need to. Area Setup and Scale & Units cover both in more depth. Confirm the form and the canvas opens on your empty area, ready to draw.

Finding your way around

Down one side is the tool rail — Select, Road, and Elevation, the tools you use to build and shape the circuit. Next to it is the elements panel, where you drag on markings, objects, and zones once there’s a road to put them on. The canvas in the middle is the circuit itself, and what dragging there does depends on which tool is active. Select any piece and its details — dimensions, markings, elevation — show up in the inspector. Tools and Course Elements go through both in full.

Plan and 3D

You can view a circuit two ways: as a flat plan, which is where you’ll do most of your drawing, or in 3D, which renders the same circuit as a real drivable space. Switch between them anytime with the view-mode toggle — see 3D Viewer for what it shows.

The guided tour

If you land on the circuits screen with no circuit open, Circuit Builder offers a short guided tour of creating and building one out. It walks through the same ground as this page, right on the actual interface. Decline it and it won’t ask again, but you can always take it later — open the overflow menu and choose Take a tour.