Enforcement Regulations of the Air Quality Conservation Act

These regulations were first issued by a Prime Minister Decree in 1991 and passed through several amendments throughout the years, mainly by Ministry Environment Ordinances. The last amendment entered into force on 01 July 2025.The purpose of these regulations is to regulate matters delegated by the Clean Air Conservation Act and its enforcement decree considering their enforcement. It sets setting binding standards and procedures to control eleven key air pollutants—including nitrogen oxides (NOₓ), sulfur oxides (SO₂), particulate matter (PM), and volatile organic compounds (VOCs). Furthermore, it legislates about monitoring and alerts systems, facility controls and regulatory areas and strategic planning. Chapter 4, section 2, establishes standards for Automobile GHG emissions management.