# Road Tool Constructor Add-On


The *Road Tool Constructor* add-on contains a set of ready-to-use assets that can be used as construction elements for roads creation. They can be assigned to points and segments of the [WorldSplineGraph](../../../objects/worlds/world_spline_graph/index.md) tool.


![](index.png)


- Two road segments
- Crossroads junction
- Roundabout junction
- Y-junction
- T-junction


## Opening the World


To open the world containing models:


- Download the *Road Tool Constructor* add-on from [Add-On Store](https://store.unigine.com/).
- Add the downloaded add-on (UPACKAGE file) to your project by dragging it into the project `data/` folder in the Asset Browser. In the *Import Package* window that opens, click the *Import Package* button and wait until the add-on contents are imported.
- Click *File -> Open World* (**Ctrl + O**) or open the *[Asset Browser](../../../editor2/assets_workflow/index.md#asset_browser)* window, open the `data` folder, and select the **road_tool_constructor** world. The scene will open. ![](load_world.png)


> **Notice:** Node references for each element, as well as all necessary FBX models, textures, and materials are available in the `data/constructor/` directory.