The incident took place late last night after the driver of the cement-laden truck lost control of his vehicle, said Prem Chand Gujjar, SHO, Lakheri police station.
Police rescued Ganesh Kavet (26), Ram Singh Mali (40) and Sitaram Meena, all residents of Uniyara village of Tonk district, from the cabin of the truck in a critical condition.
They were rushed to Maharao Bheem Singh Hospital in Kota where Ganesh succumbed, the SHO said, adding that the other two are undergoing treatment.