Travelling on M11 northbound away from London (coordinates: (sec-0010-0004);-37670.6;51.561;-14432.1;-0.0291042;-0.115282), I noticed the speed limit was 40mph instead of the expected 60mph. AI traffic around me was driving faster than me (at 60 I assume). Perhaps it did not update correctly,
On exiting the game and reloading, speed limit showed as 60mph again.
I encountered this issue again going the same route, so it seems reproducible.
I also just had the same thing happen travelling on this route from London on the A12 - the speed limit never changed from 50mph to 60mph up to the point shown on the map, where I saved and reloaded, and the limit became 60mph.