Police previously appealed for anyone with information to come forward, particularly anyone who may have dashcam footage from around the time of the crash.
Those travelling on the Tar Hill highway between 8.30pm and 9.30pm were being urged to check their dashcam footage and contact police.
Police were also asking the drivers of two truck-and-trailer units to make themselves known, both of whom were driving northbound in the passing lane at the time of the accident.
Police believe one of the trucks was nearly hit by a car involved in the collision when it overtook a truck and returned to the southbound lane.
Members of the public with information can contact the police through 105, either online or over the phone, and reference file number 260430/0478.