Yes, it's the wheels that classify this type as mobile. The stationary type is in the SCDB, but they don't have a choice since they removed the 5 code for iGO users. POI base -5 code. I'm more concerned about the selection of speedcam.txt files, as these trailers are classified differently. I believe that the 5 code is more appropriate for this type, and it will be included in the OSC - Mod AF database in the next release.