Forecasts of transport volume predict steadily increasing amounts for passenger and freight transport. In the consequence, the negative impact on mankind, climate and nature is growing, too. With this background Deutsche Bahn AG as the biggest German transport services provider has a special responsibility. Playing its role as an energy efficient transport mode it may and must significantly contribute to an overall environmentally sound transport system. In this context the corporate action programme Rail-Agenda 21 has the function of a strategic action plan for the next 15 to 20 years. It contains the essential projects, programms and measures suitable to rise efficiency, develop environmental affairs towards a strategic competitive advantage and thus force in result a sustainable development of the whole company. Based on an active participation of the whole staff in this shaping process the Rail-Agenda 21 will help to strengthen the role, which Deutsche Bahn AG plays as a socially and ecologically necessary mobility services provider in the context of the whole transport market.