Stock Photo - 13 February 2019, Baden-Wuerttemberg, Stuttgart: Winfried Kretschmann (Bündnis 90/Die Grünen, 5. v.l), Prime Minister of Baden-Württemberg, will speak at the Stuttgart traffic control centre after the signing of the final declaration of the ""Alliance for Air Pollution Control"", alongside Wendelin Göbel (l-r), Member of the Board of Management of Audi AG, Markus Mord, Managing Director of Marienhospital, Jörg Stratmann, Managing Director of Mahle GmbH, Fritz Kuhn (Bündnis 90/Die Grünen), Lord Mayor of Stuttgart, Rudi Hoogvliet, Speaker of the Baden-Württemberg State Government, Oliver Blume, Chairman of the Board of Management of Porsche AG, Volkmar Denner, Chairman of the Board of Management of Robert Bosch GmbH, Ralf Thomas, Head of the Traffic Control Center (concealed) and Markus Schäfer, Member of the Board of Management of Daimler AG. The ""Alliance for Air Pollution Control"" wants to avert the impending extension of the diesel driving bans in Stuttgart as far as possible. Photo: Marijan Murat/dpa. - Stuttgart/Baden-Wuerttemberg/Germany