At the inauguration ceremony of the Euro 6 vehicle emissions laboratory hosted by the Iran Standards and Quality Inspection Company, Sheena Ansari, the head of the Department of Environment, referred to the implementation of the Clean Air Act under the fourteenth government and spoke about the measures taken in the field of air pollution management and control in automotive inspection. Emphasizing the crucial role of vehicles and mobile sources in the air pollution of major cities—especially Tehran—she stated that about