Creating game objects on maps

Thanks for the quick reply.
I managed to draw lines (representing roads) successfully on the maps so thank you. A few additional questions I have:

- Are these lines seen as individual gameobjects?
- Can I raycast them or click on them so I can programmatically change attributes such as colour?
- Can I stored user defined attributes for these lines (such as an id, and as they represent roads in my application, things like lanes)?
- Finally, my application renders more than 10,000 lines and I'm hitting performance issues. Is there a way of only rendering lines within view. I realise level of detail (LOD) settings may help here but these are associated with camera position and not zoom level on the maps

Any pointers would be greatly appreciated - thank you in advance