A red alert, the most serious level, will be issued for air pollution in Beijing if the Chinese capital's air quality index reaches 500, local authorities said today.The information office of the municipal government released an updated emergency response plan for severe air pollution, aiming to better address air pollution with minimal disturbance to people's lives.According to the new plan, which will become effective on Decemeber 15, more gas-burning vehicles will be pulled off the streets when an alert is issued.Li Kunsheng from the city environmental protection department said Beijing had about 5.7 million registered vehicles, which emit 500,000 tonnes of pollutants every year, contributing over 30 per cent of the hazardous PM 2.5 accumulated locally.Schools and factories will be suspended or closed based on more detailed and flexible standards, state-run Xinhua news agency reported.Besides, as part of the Beijing-Tianjin-Hebei integration effort, the air pollution alert system in the three adjacent municipalities and province will be synchronised as per the new version.China has a four-tier warning system for severe weather, with red being the most serious, followed by orange, yellow and blue.
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