AN impatient driver who overtook Ian Earnshaw in on-coming traffic forced him to choose between a head-on collision or swerving dangerously close to a three metre deep concrete culvert.
"I saw the oncoming car and thought, if I don't slow down he's gonna hit that front on," he said.
"I could feel the trailer wobbling but I had to brake and take the risk it would tip."
Walter Walker was travelling in the vehicle behind his friend and was furious the driver of the ute saw the accident but kept driving.
"If Ian had hit that culvert he would've gone down with the trailer too," he said.
"I don't want to think what could have happened."
Police are looking for more information about the other vehicle involved.
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THE driver of a Land Rover slowed down to prevent a potential head on collision, which caused the trailer he was towing to flip.
A witness said the driver of a Colorado utility overtook the Land Rover when there was oncoming traffic.
One lane of the Dawson Hwy is still closed and police are controlling traffic.
The crash was five kilometers east of Calliope.
THERE has been a single vehicle crash five kilometers east of Calliope on the Dawson Hwy.
A trailer being towed by a Land Rover has flipped.
A car was being towed in the trailer.
Police are controlling traffic. No lanes have been closed but motorists are urged to exercise caution.
Gladstone Police and Gladstone Fire and Rescue service are at the scene and an ambulance has been stood down from the task.
A tow truck is assisting to move the trailer.