THE STOCKHOLM CONGESTION CHARGING SYSTEM – AN OVERVIEW OF THE EFFECTS AFTER SIX MONTHS Dr Muriel Beser Hugosson, Project manager of the evaluation programme at the Stockholm Congestion Charge Secretariat, Transek AB muriel@transek.se Dr Jonas Eliasson, Chairman of the Expert Group, Transek AB jonas@transek.se The Expert Group consists of eight traffic experts with various specialities. The group read all documentation and then, during three intensive full-day seminars, drew the conclusions presented in this summary of the evaluation of the Stockholm Trial. Several group members have in different ways participated in preparatory tasks prior to the evaluation and also conducted follow-up activities during the course of the trial. The Expert Group is chaired by Dr Jonas Eliasson, Transek AB and its secretary is Dr Lena Smidfeldt Rosqvist, Trivector Traffic AB. Other members are Associate Prof. Staffan Algers, Royal Institute of Technology/Transek, Dr Karin Brundell-Freij Engineering Faculty, Lund University, Managing Director of Inregia AB Cecilia Henriksson, Inregia AB, Prof. Lars Hultkrantz, Örebro University and scientific advisor to the Swedish Road and Transport Research Institute., Managing Director of Trivector Traffic AB Christer Ljungberg and Dr Lena Nerhagen, Swedish National Road and Transport Research Institute ©Association for European Transport and contributors 2006