Has anyone played with the rail entities yet? On the rail_track entity there are two keys I cant figure out how to use. 'Radius' and 'Count'. Anyone know how those work? I've tried to create moving landmarks such as seen in the rail map. I can get them moving and in the right direction, but I cant control their location. I tried to get several pieces to move adjacently but they bunched together overlapping. Any clues as to how to avoid/solve this? Also, how do I stop those moving pieces from showing shadows?

If anyone knows what rail_lane does, please explain that too.