AEBTRI  is the national guarantee association concerning the TIR system in Bulgaria. AEBTRI is a non-profitmaking organisation whose members include companies and establishments which are directly or indirectly concerned with road transport of passengers and goods, as well as with design, construction and maintenance of roads.
The Association is involved in representing and supporting its members, securing their interests at national and international levels. AEBTRI enjoys a full membership status in the International Road Transport Union (IRU), in the International Road Federation (IRF) and in Transfrigoroute International (TI).

The Association is registered as an agent for representation of foreign persons according to the Bulgarian ordinances for reimbursement of paid VAT.