For modern versions of SketchUp (2017–2026), follow these steps to install the .rbz file: from one of the sources above. Open SketchUp and navigate to the Window menu. Select Extension Manager .
If you have any questions or issues with the plugin, please don't hesitate to contact us. We're here to help!
For more help, you can refer to the official Instant Road NUI Quick Start guide . Easy Roads in SketchUp with INSTANT ROAD!