Hi, 
From what I understand, you are trying to import an OpenDRIVE 1.4 file into RoadRunner. Here's how you can do it: 
- Drag the relevant OpenDRIVE 1.4 file into the library browser. You can also use the file explorer to achieve the same result. 
- Click on "Set Custom Projection" in the attributes panel. 
- Click on "Use Traverse Mercator At" button. This should automatically fill in the projection. 
- After clicking the "OK" button, you can simply drag your OpenDRIVE file into the canvas, and it should be visible there. 
I understand there might be some additional issues with the OpenDRIVE file you are using. Feel free to attach it in the comments, and I will look at it and get back to you. 
I hope this helps, thanks!