Emission standards for on-road
vehicles in Thailand has been formulated by the Pollution Control
Department (PCD) and being adopted by the Ministry of Industry
(MOI) and the Ministry of Science, Technology and Environment
(MOSTE) [69]. In 2006, the Ministry of Environment also issued a longer list of air emission control for both combustion and noncombustion
processes industries. These standards are based on
European standards and emission test procedures for both gasoline
and light duty diesel vehicles [70].