Higher Density & Sustainable Transportation. In the post-oil era, the cost of transportation will rise dramatically. The solution lies in the densification of the city as well as in finding alternative ways of commuting. The long term question remains, how much density Copenhagen can afford and at what price. A first step into the right direction has been done by expanding the existing, extensive network of bike lanes into the suburbs. Additionally, there is also a network of 13 highway bike routes for bicycle commuters in planning. They will connect the suburbs with the city centre. The new Bicycle Sharing System must be integrated into this concept to create synergies with other fields, e.g. public and individual transportation. It must become an integral part of a comprehensive transport and energy policy. The New City Bike Share System. The Bike Share System must become more than just a transporting system. It deals not only with the problem of stocks and flows of people, but must add extra value to its user and to the city itself. We suggest that the Bike Share System becomes an integral part of the city. The bicycles should function as censors and inform the system about certain behaviours, so that the system can react according to the situation.To predict the performance of a system, the entities have to exchange information. An internet-based platform can analyse the different interests and could then manage possible conflicts. The bicycles are equipped with GPS und W-Lan, so they are connected to each order and can inform the system about their position and status. (Is a bike being used? Where is the bike and where is it moving to? Is there a reservation for the bike? etc.) Privacy protection is a matter that has to be taken into account in the process. To increase the number of commuters travelling by bicycle from 37% to 50% by 2015, approx. 25.000 bicycles have to be integrated into the urban fabric; these bikes will need at least 20.000 m2 of storage space. We see a high risk of overloading the squares, streets and stations of Copenhagen. Therefore, our focus is to reduce the „visual pollution“ wherever possible. At the same time, easy accessibility as well as the system’s visual presence has to be maintained (hide & show policy). The following proposal distinguishes between three different trajectory scales: S,M and L.