The original version of this note was written by the late Professor Alexander Türk In brief The free movement of goods, freedom to provide services, freedom of establishment, and free movement of capital (the ‘four freedoms’) constitute limitations imposed by EU Treaties on the EU Member States to ensure the functioning of the EU Internal Market. This form of negative integration has limits. Most restrictions adopted by the Member States that are caught by the scope of the four freedoms can, however, be justified on public interest grounds, provided such restrictions are proportionate. While the Court of Justice has had a particularly important role in the interpretation of the four freedoms (and their limits), any remaining restrictions can ultimately only be eliminated through harmonisation measures adopted by the EU (‘positive’ integration). For further reading on this, see Practice Note: Harmonisation. This Practice Note examines the four freedoms underpinning the EU Internal Market in more detail. Free movement of goods Restriction on imports Scope of the prohibition Article 34 of the