This report describes a project intended partly to survey the need for multidisciplinary competence in the field of light rail transport and partly to determine whether there is a possibility and a need for expanding light rail traffic in Sweden as a complement to other forms of public transport. The results indicate that: - There is growing interest in light rail transport in Sweden. Discussions are in progress in several Swedish cities concerning the possibility of developing existing light rail transport systems and/or reintroducing and expanding present tram systems. - Although knowledge is available, it is spread among several actors and there is a need for complementary research. - It is desirable for research and development in light rail transport to be better coordinated and to have a multidisciplinary basis with the focus on attractiveness and acceptance, socioeconomic aspects, safety aspects, and infrastructure and vehicles. The work has been carried out in the form of a number of sub-projects. The material for the report consists both of a literature survey and of a number of interviews with actors connected with light rail transport