The right to provide transport services freely throughout the Community is an important part of the common transport policy and is laid down in the Treaty of Rome. The Commission emphasizes this in its 1985 White Paper on Completing the Internal Market, and envisages that EC transport operators such as airlines, coach operators, hauliers and shippers will be as free to operate services within and between other Member States as within their own country (1) In road transport there has been harmonization of vehicle safety regulations and of the permitted sizes of articulated lorries crossing intra-Community frontiers. International goods vehicle permits are granted on a quota basis and there are regulations on driving hours (cf."tachograph") (2)