In order to facilitate, improve and develop international rail transport services and the progressive creation of the internal market in equipment and services for the construction, renewal, upgrading and operation of the rail system, the principle of mutual recognition of the national rules, the checks against these rules and the associated authorisations to place into service is supported by the Cross-Acceptance Unit works.The European Commission, with the support of the Agency, set up a task force to identify problems and propose solutions to facilitate the authorisation of railway vehicles: the findings of this task force are available in the enclosed Report.