Reports coming in of an incident on the Pacific Highway just south of Port Macquarie at Ryans Road, Southbound lanes closed.
Occurring around 12.45pm, traffic quickly backed up after a caravan being towed by a car flipped over.
Police and emergency services are now on-scene, motorists travelling South on the highway between Bonny Hills and Port Macquarie advised to expect delays, exercise caution and reduce speeds.