The thesis describes conditions for carrying out cabotage in road freight transport, in comparison to current and past development at the EU level, and in transport policy of the EU described in the primary law. The most current changes at the field of cabotage are a good precondition for the future growth of this type of transport. The issue of cabotage could be described in three groups of topics, the first being the unified EU regulations of cabotage and conditions set for carrying out cabotage, the second concerns topics, that are similar in every EU country due to harmonization of national law, for example the payment of VAT, admission to the occupancy of road haulier or technical conditions for vehicles. The third group deals with matters that are different in every EU country, e.g. toll systems. Carrying out cabotage is therefore to be adjusted to all aforesaid conditions, which have a direct influence to the economical background of cabotage transports.