16 Jan 69
During this period, the PM 2.5 dust problem is relatively high. It affects health. Cars are also the main cause of dust source.
Summary of laws and practices, black smoke monitoring and vehicle pollution. Let's see how each type of car has requirements and penalties to comply with air safety standards and together solve the PM 2.5 particulate matter.
Summary of Laws by Car Type and Regulatory Authority
1️⃣ General 4 Wheel Car (National Environmental Quality Promotion and Preservation Act 1992)
• Measures: The Correctional Officer has the power to order a "temporary ban on vehicles" by spraying or affixing a ban sign.
• Penalties: Corrections must be taken within 30 days. If contravened, fine not exceeding 5,000 baht.
2️⃣ Trucks and Public Buses (Land Transport Act 1979)
• Measures: Order "Suspend the use of the car" immediately by spewing the red message "Do not use the car."
• Penalties: Up to 50,000 Baht
3️⃣ Road Enforcement (Land Traffic Act 1979)
• Measures: Issue a prescription by the traffic officer for a vehicle with pollution exceeding the benchmark.
• Penalty: Maximum fine not exceeding 4,000 Baht
4️⃣ Personal Cars, Pickup Trucks and Motorcycles (Automobile Act 1979)
• Measures: The car may be banned until corrective action is completed.
• Penalty: Penalty not exceeding 1,000 Baht
🛠️ Practices when a vehicle is banned because pollution exceeds the standard (2026 benchmark: opaque value must not exceed 20%).
If your car does not meet the benchmark, follow the following steps:
• Repair: Take the vehicle to check the fuel system, replace the air filter or clear the nozzle at a standardized service center.
• Repeal of the Prohibition Order: Take a car with proof of repair for re-examination at the Department of Transportation or the Provincial Transportation Authority only to remove a sign or sign.
Additional Recommendations: To prevent and reduce particulate matter coming from cars, car owners should regularly take the car for inspection, change engine oil and air filters at the cycle time, and participate as part of the dust reduction, register the Green List and Green List Plus...From now - 31 Mar 2026 by filling in through the website https://lez.bangkok.go.th
📞 Inquiries: Office of Sustainable Environment, Bureau of the Environment, Tel. 02-203-2951











































































































