China will boost rail freight capacity by 2020 and raise the volume of goods delivered by trains by as much as 30 per cent, an environment ministry official said on Thursday, as the country grapples with rising vehicle pollution. Ding Yan, vice-director of the vehicle emissions control centre at the Ministry of Ecology and Environment, said trucks produced 13 times more pollution per unit of cargo than trains. “Motor vehicles have become the primary source of pollution in many large and medium-sized cities,” Ding said in comments published by the environment ministry on Thursday. The total number of vehicles on China’s roads reached 310 million last year, with car ownership still rising by around 20 million per year. Cars are responsible for about 45 per cent of the particulate matter drifting over Beijing, Ding said. Rail chaos fears after Chinese firms told to ditch polluting trucks While China has been making efforts to discourage road freight, particularly in the heavily polluted Beijing-Tianjin-Hebei region in northern China, it still accounted for 76.8 per cent of total cargo deliveries in 2017. Although the government took action to restrict the transportation of coal by road, the share of rail in total freight volumes rose just 0.1 percentage point to 7.7 per cent last year, Ding said. To boost rail freight by 30 per cent by the end of the decade, the government will charge higher fees and introduce more stringent monitoring procedures to try to discourage road deliveries, Ding said. China to cut coal use, curb steel under action plan to fight pollution The government will also crack down on fraudulent emissions inspection agencies and raise fuel standards, especially for diesel. The country’s National VI fuel standards, equivalent to the Euro VI introduced in Europe in 2014, are set to be rolled out at the start of next year.