A driver has been airlifted to hospital after emergency services responded to reports of a multiple-vehicle collision in Gordon on Thursday morning.
It is believed up to 12 vehicles drove through black ice on the Western Freeway resulting in several vehicles colliding about 6.10am.
Paramedics have assessed four patients, and one of the drivers, a 59-year-old man, has been airlifted to the Royal Melbourne Hospital with serious injuries.
The others have been transported by road to Ballarat Base Hospital with minor injuries.
The Western Freeway was closed to traffic in the vicinity of Chapmans Road, but all roads in the area have been reopened.
Victoria Police is urging motorists in the area to take care and be aware of black ice on the roads.
