CVX* files and Freeways

I have been revising the BGL CVX file formats and I noticed that with BGL Viewer, you don't see any clip 15 freeways (traffic, with the correspondent attributes)

Where is data stored? CVX*.bgl files in TMFViewer show freeways but when going to the tools BGL Viewer and CVXExtractor there seems to be no ones?

Any hints? Thanks