Chairman of National (Germany) Regulatory Control Council 2006-2021; CEO of German Railways and afterward Community of European Railways, Brussels 1997-2010; State Secretary Federal Ministry of Economics (1995-1997); Economic and Financial Advisor to the German Federal Chancellor, also responsible for the economic reconstruction of East Germany after Reunification 1990; Dr.(PhD) 1975 (University of Hamburg); MS 1972 (Stanford University).