Thai media reported on October 20 that the Bangkok Metropolitan Administration (BMA) met on October 19 to advance its PM2.5 action plan for fiscal year 2027, chaired by the deputy governor with the environment department’s leadership in attendance. The thrust: intercept pollution at its sources rather than react to smog days.
Three measures: roadside checks, an LEZ, and new legislation
First, vehicle pollution: throughout FY2027 the BMA will work with traffic police and the Department of Land Transport to run random black-smoke inspections on major roads, with proactive checks at bus maintenance depots, concrete batching plants, and construction sites, plus joint inspections of passenger vessels with the Marine Department. A green-list registration system for vehicles is planned alongside. Second, a low-emission zone: on days with high dust readings, certain vehicle types would be restricted from designated areas, with green-listed vehicles exempt; the measure is under public consultation and will go through the legal approval process. Third, legislation and enforcement: two draft regulations — one on economic instruments for clean-air public services, one revising the rules on health-hazardous businesses — are being prepared, and an environmental inspector team will be formed to consolidate enforcement of environmental laws.
What this means for AIFILTECH customers
First, Thailand is one of AIFILTECH’s core markets for diesel after-treatment, and once roadside black-smoke checks become routine, retrofitting in-service buses, trucks, and construction machinery with particulate purification systems shifts from optional to inspection-critical. Second, green-list registration turns a vehicle’s emission status into a documented record, so keep test reports and product certificates on file when installing purification equipment to make registration smooth. Third, batching plants, construction sites, and passenger vessels were named explicitly — smoke compliance for non-road machinery and marine engines needs planning too, not just road vehicles.
AIFILTECH supplies the metal black smoke purifier and the non-road exhaust gas purifier for fleets, off-road equipment, and vessel operators facing smoke inspections and low-emission-zone rules.

