What does the National V vehicle emission standard mean?

[DiLuna]

It refers to the National Phase V emission standard. Below is a relevant introduction to the National Phase V emission standard: 1. The National Phase V standard, also known as the 'National Fifth Stage Motor Vehicle Pollutant Emission Standard,' has an emission control level equivalent to the European Union's currently implemented Phase 5 emission standard. The EU has been enforcing this standard since 2009, imposing stricter limits on motor vehicle emissions such as nitrogen oxides, hydrocarbons, carbon monoxide, and particulate matter. From National Phase I to National Phase IV, each upgrade in the standard reduces single-vehicle pollution by 30% to 50%. 2. In 2012, Beijing planned to implement the National Phase V standard. Once fully enforced, it means that vehicle models failing to meet this emission standard would be prohibited from being sold in Beijing. Previously, to control motor vehicle pollution, Beijing had consistently implemented national standards ahead of schedule. To support the implementation of the National Phase V emission standard, Beijing will further improve fuel quality to align with the National Phase V requirements.