Beijing's municipal legislature reviewed on Wednesday new regulations on diesel trucks and industrial vehicles in order to further combat air pollution in the Chinese capital.

Lawmakers heard the draft measures during the 14th session of the 15th Standing Committee of Beijing Municipal People's Congress. According to reports at the meeting, motor vehicles and off-road industrial vehicles have become the primary sources of PM2.5 in Beijing.

The city has 250,000 heavy-duty diesel vehicles, while 30,000 diesel trucks enter the Chinese capital on a daily basis. They contribute to over 70% and 90% of the city's total nitrogen oxides and particulate emissions, respectively.

The off-road industrial vehicles, including those used for construction, farming, and airport ground support, total between 60,000 to 80,000 and are more severe causes of pollution than cars.

To address this, the new regulations are mandating registration for all heavy-duty diesel vehicles, natural gas vehicles, and off-road industrial vehicles in Beijing, including those yet to be sold. The registration information will also be provided to the city's environmental protection authorities.

In addition, the municipal government will promote energy-saving and environmentally friendly vehicles, new energy vehicles, and new energy industrial vehicles, as well as the construction of supporting facilities. Also, transportation will undergo a structural adjustment in Beijing, with railway transportation the first option for bulk cargos.

The new regulations have also included measures of enforcement, stating that violators would be documented on the online platform of Beijing public credit. Cases of noncompliance and refusal of paying fines would be subject to more severe court penalties.

The draft measures also proposes a coordinated pollution control mechanism among Beijing, Tianjin, Hebei province, and neighboring areas to monitor emissions from motor vehicles and industrial vehicles.