That might be Switzerland. White frames around traffic lights are not typical for Germany. And the sign itself would likely have a white background instead of a yellow one. Also there is a Molly Malone Pub with a similar typography as the one in the ad in Winterthur, Switzerland.

And yes, it’s a very boring day today

It’s the Schmidtstedter Knoten in Erfurt.
GeoHack (50.9725; 11.042222)