A MAN has escaped serious injury after running away from a car crash into highway traffic where he hit three separate vehicles before jumping off a 7m bridge yesterday.

The seemingly indestructible 38-year-old was driving up the Pacific Highway near Wyong on the Central Coast about 7.45pm when his sedan drifted over to the wrong side of the highway and collided with a car travelling in the opposite direction.

The motorist, from Woongarrah, got out of his car to check on the welfare of the family in the other car, none of whom were injured.

"He was ... apologising to the occupants of the other car when all of a sudden he just took off and ran up the road," said Sergeant Sean Lodge of The Entrance police.

"He ran head-on into a Tarago van."

The man bounced off but the van could not stop before running over him, with the rear wheel rolling over his body, Sergeant Lodge said.

The man jumped up and kept running straight up the Pacific Highway when he "swan-dived" over the bonnet of another car cracking the windscreen, Sergeant Lodge said.

The man got up again and ran headlong into the side of another car, deeply denting the side panels with his body.

Inexplicably the man got up a third time and ran to the Pacific Highway overpass where the road rises to a 7m bridge over train tracks below.

He jumped and hit the ground where he rolled a further five metres before police and ambulance crews caught up with him.

"He became angry and had to be restrained and sedated before being taken to hospital," Sergeant Lodge said.

Sergeant Lodge said the man had escaped injury as the vehicles he hit had all slowed down as they saw him approach.

"They were not going fast, they could see him running up the road. He deliberately ran into all three cars," Sergeant Lodge said.

The man was taken to Gosford Hospital for observation with no obvious injuries, Sergeant Lodge said.

He will be tested for drugs and alcohol, and for possible head injuries.

Originally published as Is this the bionic man of NSW?