BY JESSICA ROUSE
Traffic is slowly getting back to normal on the M1 Pacific Motorway at Mount White this morning after a truck hit a rock wall exploding into flames.
Just before 5:30am, emergency services were called to Jolls Bridge on the M1 following reports a truck had hit a rock wall.
Officers from Northern Region Highway Patrol and Brisbane Water Local Area Command attended the scene and are investigating.
The driver, believed to be in his late 30's, was pulled from the truck by passing motorists just as it caught alight.
The man was treated at the scene by NSW Ambulance Paramedics before being airlifted to Westmead Hospital in a critical condition.
Hunter motorists had a long drive ahead of them with traffic backed up for more than 10 kilometres.
All southbound lanes are now open.