Government Regulation (PP) No. 41/1999 on Air Pollution Control is an implementing regulation to Act No.
23/1997 which relates to air quality management. This PP imposed several standards: ambient air quality
standards, emission standards for industrial activities and motor vehicles, and Pollutant Standard Index (PSI).
To implement the articles in this PP, the State Ministry of Environment (MoE) has issued several regulations
and decrees specifically pertaining to the emissions standards. Local governments need these technical
guidelines to develop and implement policies, strategies and action plans for air quality management in their
respective areas.