A man has been killed after he fell from a Mercedes-Benz car on a major highway and was then hit by another vehicle.
The incident happened on the Pacific Highway near Chinderah on the NSW far north coast, on Wednesday evening.
Members of the public tried to help, but he died at the scene.
Emergency services were called to the highway near the Tweed Valley Way exit at Chinderah about 6.30pm.
A man, in his 20s, had reportedly fallen from a Mercedes onto the roadway and was then struck by a passing motorist, a police spokesperson said.
The 27-year-old driver of the Mercedes was arrested, taken to Tweed Heads Police Station and underwent a breath test that returned a reading of 0.074, above the 0.05 limit for drivers.
The driver received an infringement notice for low range prescribed concentration of alcohol and was taken to Tweed Valley Hospital for mandatory testing.
The police crash investigation unit is investigating the incident, and police have asked any witnesses or drivers with dashcam footage to come forward.
Police will prepare a report for the coroner.