UPDATE 6pm: Police are appealing for public assistance after a hit and run involving a truck and a man near Woodend this afternoon.
Investigators have been told a car stopped on the side of the Calder Freeway between Bawden and Quarry Roads about 1.55pm due to an empty petrol tank.
The driver was filling up the tank when a small truck clipped the man and continued driving southbound.
It is not known whether or not the truck driver is aware the man was struck.
The driver, a 25-year-old Pascoe Vale South man, was taken to hospital by Air Ambulance.
The driver of the truck is yet to be identified and the investigation is ongoing.
The truck is described as a 4.5 tonne Curtainside or Tautliner.
Anyone who witnessed the collision is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report at www.crimestoppersvic.com.au
EARLIER: A man has been airlifted to the Alfred Hospital, Melbourne, after being hit by a truck on the Calder Freeway on Thursday Afternoon.
Ambulance Victoria spokesperson Rebecca Brewin said the man, in his 20s, was in a stable condition.
Victoria Police have been contacted for comment.
More to come.