Since it has been shown that car-sharing can contribute markedly to reducing the burden of automobile traffic on the environment, the Swedish National Road Administration considers it important that the establishment and growth of car- sharing schemes be enouraged. There is a need of clarifying, however, just what car-sharing is and what quality requirements should be met by car-sharing groups in order for public benefits and support to be provided them. Accordingly, the Swedish National Road Administration decided in November 2002 to commission the firm Trivector Traffic with developing a more adequate definition of car-sharing and recommending what quality requirements should.
