I'm trying export from MicroStation to Lumen RT and my line work is not coming up. I did not add any elevations to my line work and this could be the problem. Although, I have done intersection in the past in 2D and imported them to Lumen and they were exported fine. I was able to show different perspectives. I get the picture below once I exported. It is not the geocoordinate system because I changed it to Florida West. Thanks Elizabeth.
Your linework won't show up in LumenRT if it is not a mesh or shape. You'll need to create a linestyle with a true width for your markings and pavement lines.