Free movement of goods
The principle of free trade is one of the main pillars on which the economic integration of the EU rests. This legal principle is contained in art 30 of the EC Treaty, which prohibits quantitative restrictions and measures of equivalent effect. It has become one of the key factors in creating the EU's economic area, in which market forces are free to operate without national boundaries. In contrast with its striking brevity, interpretation of art 30 has given it a very large scope of application. This is due to the European Court's sweeping definition of measures of equivalent effect in Procureur du Roi v Dassonville [1974] 2 CMLR 436. This definition looks not only to discrimination, even indirect, but also to the effect on trade within the EU, and not just to actual hindrance, but even to potential indirect hindrance, regardless of the purpose of the measure. Although in keeping with the aims of free trade and market integration, such broad based definition restricts the sc...