The subject of this article is technical barriers to trade (TBT) provisions in preferential trade agreements (PTAs). More precisely, it inquires into TBT provisions in PTAs that go beyond the scope of the rules enshrined in the World Trade Organization’s (WTO) TBT Agreement. To this end, it...

This work provides a revised method of aggregation of tariff line data that is consistent with a common objective of the preferential policies. Using constant-elasticity-of-substitution aggregators we compute the uniform preferential tariff reduction that would leave the volume of imports...