A driver has died after a ute and truck collided on the Newell Highway in the early hours of Sunday morning.

About 2am on December 15 emergency services were called to the Newell Highway at Tomingley, about 54km south west of Dubbo, following reports of a two-vehicle crash.

Officers attached to Orana-Mid Western Police District were told a truck and a white Toyota ute had collided.

The driver of a ute was a 26-year-old man who died at the scene.

The driver of truck, a 37-year-old man, was treated by NSW Ambulance paramedics before being taken to a hospital for a mandatory testing.

A crime scene has been established and an investigation into the incident has commenced.

Both vehicles were seized for forensic examination.

A report will be prepared for the information of the Coroner.