29 European countries, Members of the European Union and of the European Economic Area, have signed a Letter of Intent to intensify cooperation on testing of automated road transport in cross border test sites. This initiative drives forward the plans of the Commission's strategy to build a European Data Economy announced in January 2017.

https://ec.europa.eu/digital-single-market/en/news/eu-and-eea-member-states-sign-cross-border-experiments-cooperative-connected-and-automated