Over several decades, the 1975 Customs Convention on the International Transport of Goods under Cover of TIR Carnets (TIR Convention) has proven to be one of the most successful and efficient … instruments for the facilitation of international transport and goods in transit, helping to increase trade, boost economic growth, and make communities stronger. The world’s only tried and tested global Customs transit system – it is the easiest, safest and most reliable way to move goods across international borders, saving time and money for transport operators and Customs authorities.