What are the environmental protection testing standards for motor vehicles?

[LeLeah]

Emission standards. The following is a detailed introduction to the relevant content: Testing standards: The limit for carbon monoxide is 6.3g/km, and the total limit for hydrocarbons and nitrogen oxides is 2.0g/km. The vehicle exhaust emission test is based on whether the smoke opacity value meets the standard, and whether the emissions meet the standard is primarily determined by the vehicle test data. The smoke opacity value is used to confirm whether the vehicle meets the standard. Annual inspections for passenger cars include an exhaust emission test. After the external inspection during the annual vehicle inspection, the first test conducted is to check whether the exhaust emissions meet the environmental protection standards. However, if the exhaust emission values do not meet the standard, the annual inspection will not pass. It is recommended to first visit a familiar auto repair shop for testing before proceeding with the annual inspection. The standard values vary depending on the vehicle type, total vehicle weight, manufacturing year, and fuel type. Precautions: Motor vehicle exhaust inspections are conducted jointly by the environmental protection administrative department and the public security traffic management department. Traffic police are responsible for directing, intercepting vehicles, and handling vehicles that exceed the standards, while environmental protection personnel are responsible for monitoring. Law enforcement officers will explain the situation to the relevant parties on the spot. If gasoline vehicles are found emitting black or blue smoke, or if the exhaust opacity of diesel vehicles exceeds Ringelmann level 1, the on-duty traffic police will impose penalties on the spot in accordance with regulations, temporarily confiscate the vehicle license plate and registration certificate, and issue a temporary confiscation receipt. Environmental protection law enforcement officers will issue a rectification notice to the violators and impose penalties in accordance with the law. Administrative penalties are implemented according to the procedural regulations for environmental protection administrative penalties. Procedures for reclaiming confiscated license plates and certificates for vehicles with excessive exhaust emissions.