The accident occurred near Sallhawas village here when the gravel-laden truck was on its way from Jaipur side to Dharuhera and it hit a stationary trailer vehicle carrying small stones, they said.
While truck cleaner Moin Khan died, another cleaner Shahbaz Khan and driver Amir Ahmed were seriously injured and have been hospitalised, police said.
A case of negligent driving has been registered against the absconding trailer driver, they said, adding, a search is on to nab him.