Road Profile

A Road Profile (URoadProfile) is a reusable Content-Browser asset that defines the lane layout a new road starts with. It is applied by the Draw Spline Tool and the Roundabout Tool when you draw a road.

Create one from the Content Browser (right-click → Meta Road → Road Profile); double-click it to open the Road Profile editor described below.

The Road Profile editor

The editor is a small road editor with a live 3D preview, so you shape the profile and see the result immediately.

Preview viewport — a 3D preview of the profile.
Details panel — properties of the current selection (a lane, the center line, or the whole profile).

Preview modes

A dropdown in the toolbar switches what the preview shows:

Road Graph — the schematic lane graph (as you edit it).
Generated Mesh — the baked result of the profile.

Editing lanes

Right-click a lane in the preview for its context menu:

Add Lane (to the left or right of the clicked lane / center)
Delete Lane
Reverse Lane — toggles that lane’s traffic direction

Select a lane, the center line, or the whole profile to edit it in the details panel. Per-lane properties include:

Property	Description
`Width`	Lane width
`Road Zone`	Surface type of the lane (driving, sidewalk, tram, …) — sets material/behavior
`Attributes`	Lane attributes carried by the profile (e.g. markings)
`Direction`	Per-lane traffic direction (Default / Invert)
`bSkipProceduralGeneration`	Exclude this lane from mesh generation

Profile-level properties: center-lane attributes and the road Direction (Right-Hand / Left-Hand traffic).

Presets

A preset panel lets you preview build-setting presets against the profile without changing the asset. See Preset Mode and the Build Preset asset for how build-setting presets work.

Drag and Drop

Drag a Road Profile from the Content Browser onto a road to apply its lane layout to that road: