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Lane Form Tool

Add forming or ending lane along road


The Lane Form Tool is used to add a forming or ending lane along a road.


To create a fully formed lane, use the Lane Add Tool.

Open the Lane Form Tool

On the RoadRunner toolbar, click the Lane Form Tool button:

Lane Form Tool button


Add a New Lane to a Road

  1. Click the Lane Form Tool button.

  2. Click the road you want to edit.

  3. Select the desired lane type in the Options pane.


    If the lane type is set to Automatic, then the new lane copies the lane type of the neighboring lane.

  4. Move the pointer near where you want to add a lane until you see a light blue line indicating where the new lane will be added. If you are pointing near the center reference curve of the road, you can choose which side of the road the new lane will go by moving the pointer to one side or the other of the center curve.

    By default, the new lane will be added only between the two nearest intersections. To force the new lane to add along the entire road, hold the Ctrl key.

  5. Right-click and drag outward from the center of the road to create the new lane and adjust the end of the tapering section.

  6. Optionally, you can drag up or down the length of the road to switch between a forming lane and an ending lane.

Introduced in R2020a