3DC and Train Sim Materials

I’d love to know that myself. I’ve been told a few rules of thumb but the only one I know for sure is if you want it to appear lit at night, set specularity to 0

Has anybody compiled a list of good relative values in 3DC for the materials recognised in Train Sim, ie. specularity values for SolidHiShine and Gloss and Ambient values for SolidBright, SolidHlfBrt and so on?

I am interested in what values people have found to be the best for applications such as models that stay bright at night.

Cheers,
Mark