IMAGE: Courtesy of 7 News
Crash investigators are continuing to look into yesterday's fatal crash on the M1 at Somersby, as fresh details emerge.
About 10am, a prime mover with a single trailer was stationary in the northern breakdown lane, just south of the Gosford exit, when a Ford panel van veered to the left and slammed into it's rear.
The 49-year-old front seat passenger in the van, from the Tuggerah area, died at the scene, while the 46-year-old driver of that vehicle remains in a critical condition in Royal North Shore Hospital.
The truck driver, who it's understood was changing a tyre at the time of the accident, wasn't injured and returned a negative breath test.
Anyone who witnessed the crash is being asked to come forward.