Tried a speedometer app on my phone, don't know know accurate it is, so tried it in the car.
My VW Golf, driven at 70mph displays 67mph on the app.
My Transalp 700 at 70mph displays 63mph on the app !!!!, at 80mph it displays 72 !!!!!!!!!!!
So I'm sitting at the lights.
Just as the pedestrian lights go red, and milliseconds before I get the green light (there's no filter green light for the right turn) the bus driver of the number 25 bendybus decides now's his time to enter the yellow box with his way ahead completely blocked...