The crash happened north of Stansted Airport on the M11
Three men have been arrested after a 15-year-old girl suspected of being a victim of people trafficking was found in a van that crashed on the motorway.
Police were called at 05:15 BST to reports of an overturned van towing a caravan between junctions 8 and 9 on the northbound M11 in Essex.
The girl was taken to hospital although her injuries are not believed to be serious, police said.
Three men from Poland are currently being questioned by officers.
Police said two of the men, aged 42 and 19, were arrested on suspicion of dangerous driving and people trafficking.
The third man, aged 29, was arrested on suspicion of immigration offences.
