In October 1993, following the adoption of the Council Directive 93/89/EEC, DG VII and DG XIII jointly proposed a concerted action for research on demand management in Europe (CARDME). The objectives of CARDME are to identify obstacles to the introduction of demand management policies such as theautomatic collection of motorway tolls and recommend proven sets of options suitable for pan-European implementation. In this connection, the Directive requires the Member States to bear in mind the advantages of achieving interoperability. A seminar in Brussels on 31 January 1994 was attended by 200 people representing users, industry, operators, national authorities and others from 16 European countries as well as representatives of the Commission. At a meeting immediately after the seminar a task force was formed to draw up a work plan for the concerted action. Discussions have been held with representatives of companies involved in the development of electronic toll collection systems and at the Fourth Framework Programme planning meetings. As a result of these extensive consultations a work plan has been drawn up and will be submitted in April 1994. One of the major actions planned by the Commission as part of CARDME is the launching of a project to enable European industry to prove interoperability of motorway tolling systems over an extended period of time on a section of the trans-European road network passing through several Member States.