Air pollution is a big problem in Thailand which makes many Thai people sick, harms the
environment, and also affects the tourism industry. When you go to Sukumvit Road which is
the business center of Bangkok City, there is always a long queue of cars waiting for traffic
light turn to green. Then you will understand why air pollution is so severe. Since 2008,
policemen in Thailand randomly set up road blocks to check the vehicles gas emissions on the
spot. According to Thai Thammasat University researchers Nuntavarn and Nitaya (2011),
Thailand now faces three kinds of air pollution“(1) vehicular emissions in cities; (2) biomass
burning and transboundary haze in rural and border areas; and (3) industrial discharges in
concentrated industrialized zones.”