[DaveinGermany]

Originally Posted by gpick24

My brother used to live in Germany and I remember when visiting once he told me on a stretch of dual carriageway, that the lights were timed so that if you kept to the limit, the lights will be on green, if you speed you get to the lights sooner and they will be on red.

There's a few places like that, Gutersloh ring road & Bad Oyenhausen main drag spring to mind, if you travel at the stated speed 60 kmh (37 mph) or just below, you get a "Grunewelle" green wave & the traffic flows, to fast or to slow you'll be catching red lights.