Traffic and housing in the eco-friendly district Vauban in Freiburg, Germany, ecological buildings supplied with solar energy. Automobile traffic on a street of the Vauban district. Tram. Semi-detached houses with sun roof. Empty parking lot. Tram. Green roofs (yellowing grass). Group of Japanese visiting the Vauban district (taking photos and notes) Keywords: GERMANY,ENERGY,SOLAR ENERGY,ENVIRONMENT,HOUSE