A review of 16 selected case studies was carried out based on the identification of the countries with the most advanced emission standards for combustion engines. Consideration was also given to incorporating the experiences of countries importing machinery to Latin America. The case studies include the European Union, one city (London), and other countries listed in the Table 3. 1
The review focused on regulatory documents for each case study, covering environmental, transport and trade sector regulations, among others, which are the sectors where standards associated with NRMM were identified. Previous studies from indexed literature and the community of practice were also reviewed.
In addition, interviews were conducted with people working with machinery in the countries where the CALAC+ Programme operates, in order to better understand the context and identify key aspects for the control of NRMM emissions that are not necessarily reflected in the current regulations. The interviews identified points of view on the application of regulations in the countries of the region.