Police are appealing for witnesses following an incident on Frankston Flinders Road in Frankston this morning. A man believed to be aged in his 30s has been airlifted to hospital in a critical condition after being struck by a car just after midnight. The driver of the car was not injured and is assisting police with their enquiries. Anyone who witnessed the incident is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential crime report at www.crimestoppersvic.com.au