Data Dissemination

UNCTAD’s NTM data is made publicly available through two portals, TRAINS and WITS.

NTMs have been collected from official sources, mainly national laws and regulations. NTMs are classified according to the International Classification of NTMs, as established by the MAST group.

Products are classified at the most detailed level and the Harmonized System (HS) classification at the national tariff line level.

  1. Trade Analysis Information System (TRAINS):

    TRAINS provides data on NTMs at the HS 6-digit product classification. The data is provided systematically by country, type of NTM, affected product and partner country and has about 30 variables including the source of information, dates, textual descriptions etc. Moreover, researchers interested in NTMs can download a STATA dataset with additional variables.

  2. World Integrated Trade Solution (WITS):

    WITS integrates TRAINS with other trade-related databases, such as UN COMTRADE, WTO Integrated Data Base (IDB) and WTO Consolidated Tariff Schedules (CTS). As a result, WITS offers an interface that provides access to databases covering imports, exports and protection data — tariff and non-tariff measures — over time. Users may obtain detailed data for individual countries. They may also create their own country and product aggregation. The registration is free.

In addition, the WTO’s Integrated Trade Intelligence Portal (I-TIP) provides information on NTMs applied by WTO members in merchandise trade.

Unlike UNCTAD’s data collection, information in I-TIP is based on WTO members’ notifications of NTMs as well as information on specific trade concerns raised by members at WTO committee meetings. Moreover, while I-TIP follows the NTM Mast Classification, it only covers the broadest classification level of NTMs, as measured by the 1-digit level.

Lastly, information in I-TIP exhibits limited product specificity for two reasons. First, product coverage is limited to NTMs related to Sanitary and Phytosanitary as well as Technical Barriers to Trade. Second, product disaggregation is limited, as measured by the 1-digit Harmonized System (HS) classification.


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Charlie Hebdo