So, I was trying to drive from Finnetrop to Hagen and make a note of where the signals and speed signs are, driving a little more slowly than normal and enjoying some of the detail that might not be seen at line speed (15:10 service but in the 155). Mostly everything seemed sensible, but about the 8.4 km post near Hagen there was a combined main and distant signal and the limit dropped to 40 km/h at that point from 120. This was shown on the HUD/speed limit change markers, but I couldn't see any signs for it. I had SIFA and PZB off as I was trying to concentrate on the route during that drive, could the signal aspect have triggered a drop to 40 km/h or did I miss a sign? (and it was 40, not 45). Thanks.