Police are investigating following a truck crash near Singleton yesterday.

About 9.50pm (Wednesday 27 July 2016), police and emergency services were called to the New England Highway, near Hebden Road at Ravensworth, northwest of Singleton, following reports of a crash between a truck and a car.

On arrival officers found a B-double truck carrying paper, well-alight after crashing into a parked car.

The driver of the truck, a man in his 40s, was treated at the scene by NSW Ambulance Paramedics for leg injuries before being taken to Singleton Hospital in a serious condition.

He was later flown by Westpac Rescue Helicopter to John Hunter Hospital for further treatment.

The New England Highway will be closed for some time while emergency services deal with the fire and the removal of the truck.

A crime scene has been established while officers investigate the circumstances surrounding the crash.

Local traffic diversions are in place and motorists are advised to avoid the area and refer to www.livetraffic.com for further traffic information.