Seven people were injured in the accident that occurred as the workers were being taken to a railway construction site in Lintao county, Gansu province, Xinhua news agency said.[break]
It was unclear how many workers were riding in the vehicle when it overturned, the report said.
Earlier this month, China´s railways ministry ordered delays to ongoing rail projects following a deadly high-speed accident between two bullet trains in July that left at least 40 people dead and nearly 200 injured.
According to Xinhua, the railway workers killed Saturday were working at a site on the Lanzhou-Chongqing line, but the report did not say if the line was a high speed railway.
China has developed its vast transport network at breakneck speed, building the world´s largest high-speed rail system from scratch in less than a decade.
But the government has been accused of overlooking safety in its rush to develop, most notably after the July high-speed rail crash near the eastern city of Wenzhou and a metro collision in Shanghai in September that injured nearly 300.
In the weeks following the July crash, the government announced a halt to new train projects.
In February, rail minister Liu Zhijun, who had pushed forward the building of the high-speed rail system, was sacked and placed under investigation for graft, state press reports said.
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