The deceased have been identified as Sanjeev Kumar (60), Ankita (40), his son (17), and daughter (14), and another woman.
The police further said that the incident took place on National Highway 28 near the Khajhaula police post when the speeding car rammed into the container truck parked on the roadside.
According to the police, the family was on its way to Sant Kabir Nagar from Lucknow.
The bodies have been sent for post-mortem, police said.
–IANS
amita/sha