Transport Authority Targets PM2.5 Reduction

Introduction to the PM2.5 Reduction Initiative
The Ministry of Transport has initiated a significant campaign aimed at reducing PM2.5 emissions, focusing on the "Green List" registration for buses and trucks in support of Bangkok's Low Emission Zone (LEZ) policy. This initiative is part of a broader strategy to improve public health and the overall quality of life by addressing air pollution.
Key Measures to Combat Air Pollution
Deputy Transport Minister Mallika Jiraphanwanich introduced these measures as a response to the growing concern over PM2.5 particles, which are 2.5 microns or smaller in diameter. These particles are known to have severe health implications, particularly for respiratory systems. The initiative emphasizes the transition to cleaner vehicles, promoting the use of environmentally friendly public buses such as those equipped with Euro 5 engines and electric models. This shift aims to replace older fleets, thereby significantly reducing black smoke and PM2.5 emissions from the transport sector.
Enforcement and Support for LEZ Policy
The Department of Land Transport (DLT) has been tasked with strictly enforcing laws related to truck and bus smoke emissions across the country. Additionally, the DLT is supporting Bangkok's LEZ policy, which seeks to restrict high-polluting vehicles from entering critical areas. This enforcement is crucial in ensuring that the city meets its environmental goals and improves air quality for residents.
Encouraging Participation in the Green List Programme
Operators are encouraged to join the "Green List" programme, which requires regular vehicle maintenance such as oil changes and air filter replacements. This maintenance is essential for building a safe and sustainable transport system and improving air quality. By adhering to these standards, operators contribute to a healthier environment for all.
Ongoing PM2.5 Reduction Plans
Sorapong Paitoonphong, director-general of the DLT, highlighted that the department has continuously implemented PM2.5 reduction plans. These include tax incentives for electric vehicle (EV) adoption, nationwide roadside smoke inspections, and the creation of joint task forces with Bangkok authorities to monitor vehicle inspection centres. Such efforts demonstrate a commitment to tackling air pollution through a multi-faceted approach.
Expansion of LEZs in Bangkok
The Bangkok Metropolitan Administration (BMA) plans to designate LEZs across all 50 districts. During severe pollution episodes, buses and trucks with six or more wheels will be banned from entering these areas, except for vehicles meeting EV, NGV, Euro 5-6 standards or those registered under the Green List. This measure is expected to significantly reduce emissions in densely populated areas.
Maintenance Guidelines for Operators
Operators are advised to maintain their vehicles properly by regularly changing oil and air filters, cleaning air filter systems, performing routine engine checks, adjusting fuel injectors for fine atomisation, cleaning fuel systems, and covering open truck loads with tarpaulins to prevent debris, odours, or dust emissions. These practices not only ensure compliance with regulations but also contribute to a cleaner environment.
Registration for the Green List
Registration for the Green List is open via quick response (QR) code or https://lez.bangkok.go.th until March 31 next year. This online platform provides an accessible way for operators to participate in the initiative and contribute to the city's environmental goals.
Continued Enforcement and Government Policies
The DLT confirmed that proactive enforcement will continue, with inspectors deployed nationwide to measure exhaust smoke from trucks and buses. Integrated government policies are also being implemented to tackle PM2.5 pollution comprehensively. These efforts reflect a unified approach to addressing one of the most pressing environmental challenges facing urban areas today.
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