Dashcam footage that shows a driver coming dangerously close to causing two head-on collisions on the Kings Highway in New South Wales is being investigated, police have confirmed.

The footage, which was apparently filmed on Christmas Day, shows an Audi four-wheel drive repeatedly cross into an oncoming lane, narrowly avoiding traffic twice.

On the second occasion, a car is forced to veer off the road to avoid hitting the Audi.

Chief Inspector Phillip Brooks from the NSW Traffic and Highway Patrol Command said the footage, which includes the Audi's number plate, had been handed over for investigation.

"We'll be making inquiries to hopefully establish the driver and try and find out what are the circumstances leading to those events," he said.

"What we're seeing on the vision, it could have ended in tragedy."

Chief Inspector Brooks said police were cracking down on road safety along the Kings Highway, and reminded drivers to be patient on the road.

"It shows an example of someone who is quite obviously in a rush, putting themselves and other road users at great risk," he said.

"Sadly there have been fatalities on that stretch of road, and police are there to make sure people are driving safely."