https://www.cnet.com/roadshow/news/hamburg-germany-diesel-ban/

In just the latest bit of bad news for diesel fans, Hamburg is now taking steps to be the first city in Germany to enact a ban on older, more heavily polluting diesel cars. Reuters reports that city officials put up 100 signs that prohibit diesels from certain roads in the city – though for now, the ban hasn't gone into effect and the signs are just a preparatory step.

The ban will initially only affect a small part of Hamburg. Germany's Handselblatt says it will cover just over a third of a mile of the Max-Brauer-Allee, and about a mile of Stresemannstrasse.