[MrGilbert]

There is a similar project going on in the city of Hamburg for quite some years now[1], covering the Autobahn A7, which goes from southern Germany all the way up to the Danish border, thus being a pretty important route and Germany's longest Autobahn.

Roughly 140,000 cars are crossing the city through the Autobahn per day.

[1]: (PDF, english) https://www.hamburg.de/contentblob/7896702/27d2e4d96831a306f...