Ved transport inden for Unionen er det forbudt medlemsstaterne at anvende priser og vilkår, der indebærer nogen form for understøttelse eller beskyttelse til fordel for en eller flere bestemte virksomheder eller industrier, medmindre Kommissionen ved en europæisk afgørelse giver bemyndigelse dertil.  
The imposition by a Member State, in respect of transport operations carried out within the Union, of rates and conditions involving any element of support or protection in the interest of one or more particular undertakings or industries shall be prohibited, unless authorised by a European decision of the Commission.  