---
title: 3D lane
slug: task-view-guide/3d-lane
docTags: 
createdAt: 2023-08-09T07:39:55.371Z
---

![](https://api.archbee.com/api/optimize/wLEz_RbWP6nIMpY-prjlm/sZPMlIJeOMdjbkXyCs2hY_skarmavbild-2023-09-25-kl-154442.png "3D lane shape")

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## Drawing tool

This geometry shape is drawn using **the** **3D lane tool**. It is mainly used to mark road markings. What differentiate it from [3D lines](docId:7INL_rq6tOYb7ytadaUwB) is that you can adjust the line's width, in other words set the left and right boundaries.

### Drawing process

**Set width**

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Select a class
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Click at either the leftmost or rightmost edge of the line

A red indication should appear 
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Click at the opposite edge

This should create a lane marking shape
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::Image[]{src="https://api.archbee.com/api/optimize/wLEz_RbWP6nIMpY-prjlm/C5LpHKuGZygYWochsVWd7_width.gif" size="50" width="840" height="406" position="center" caption="Set width " darkWidth="840" darkHeight="406" showCaption="true"}

**Place points**

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Move along the lane markings and place points where you want to have control points. 

The points will be placed at the lowest point in the point cloud at that location.
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Continue placing points until you feel done with the object.
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::Image[]{src="https://api.archbee.com/api/optimize/wLEz_RbWP6nIMpY-prjlm/SLXu7MaJVLKmRoWkksv0c_3d-lane.gif" size="50" width="840" height="406" position="center" caption="Place lane points" darkWidth="840" darkHeight="406" showCaption="true"}
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## Tranformation controls

### Adjust

Use the 3D [Transformation controls](docId\:AI1c20I3hoU_BEXm8fFMX) to adjust the placement of the line point. To change the entire line, press `shift` before moving the controls.

### Extend the lane

You can extend a lane from the start or end with keyboard shortcuts. Press `0` to extend the line from the end or `shift+0` to extend the lane from the beginning. 
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## Zoom to selected

Zoom to selected to quickly review the points along a line by pressing `k`.
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## Select  point in 2D miniature image

You can select projected 3D lane points in the 2D miniature image.

::Image[]{src="https://app.archbee.com/api/optimize/wLEz_RbWP6nIMpY-prjlm/9gKoLr2A7WXIehZsbNJWb-20251202-110700.gif" size="50" width="599" height="813" position="center" caption="Select projected point in 2D miniature image" showCaption="true"}

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[2D miniature image](docId\:BUDTV3lL0y3HHQYK8qXGl) 
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[Projections](docId\:HnGmpFPjhTMaCdfUwwe8M) 
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## Step between points

Step between points using `alt+n`and `alt+p`.

::Image[]{src="https://api.archbee.com/api/optimize/wLEz_RbWP6nIMpY-prjlm/ndgED84G6zjv-cnqaNq1w_point-switch.gif" size="50" width="940" height="406" position="center" caption="Step between lane points with shortcut keys" darkWidth="940" darkHeight="406" showCaption="true"}
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## Reverse direction

You can reverse the line direction by clicking on the 3D lane with the right mouse button and selecting "Reverse direction." See [Direction indicator](docId\:vg0RqVtpdKretT4oSVWCH) for how to view lane direction indicators.

You can add a custom shortcut to reverse the direction of the selected 3D lane. See [The keybindings window](docId\:ZeOhmSOo_kfy-qZQnMNY2) for how to add a custom keybinding.

::Image[]{src="https://api.archbee.com/api/optimize/36CD7zAaOHvlVITPdmtCr-9TdIV9Mczl2ndqpAa2FNN-20240822-092519.gif" size="60" width="590" height="693" position="center" caption="Select "Reverse direction" in the context menu to reverse the direction of the shape" darkWidth="590" darkHeight="693" showCaption="true"}
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## Edge controls

You can enable the lane edge controls in the action bar. These controls lets you move the control nodes to the left and right edge of the 3D lane geometry.

![Enable the edge controls in the actionbar](https://api.archbee.com/api/optimize/wLEz_RbWP6nIMpY-prjlm/BY-Cy2ZsRBcgJrM4FB5lF_image.png)

You can bind a shortcut that lets you cycle between controlling the left, right and center of the 3D lane. [Align 3D nodes to ground](docId\:E27ypfHIdmMW_NZydSyki) will be affected by the edge controls and only align the selected edge. If the center is selected both left and right will assume the same value.

![](https://api.archbee.com/api/optimize/wLEz_RbWP6nIMpY-prjlm/GtD5eaDcvvkGlw4lfCT1N_image.png)
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***

## Related content

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We recommend using the [Point slicing](docId\:gTV4dz53CZR-JKxl1l1LY) in tasks where vehicles on the road may obscure the points of interest on the ground.
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[Node and shape edit modes](docId:9Y0ax8qabL5CeiKmQxRDe) shares insights on how to transform one node or the entire shape at a time.
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Find out how you can [Multi-edit nodes](docId\:UmF1ixrqo2cPGeL0yQTTL) on 3D Lines and Lanes, allowing you to adjust or remove the nodes. 
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