Police are investigating a three-vehicle-crash which occurred in Jindalee earlier today.
At 2.15pm, travelling southbound on the Centenary Highway at Jindalee, a motorcycle and a car collided.
The impact threw the motorcyclist to the ground where he was struck by a passing struck.
The 21-year-old male rider from Boronia Heights was transported to hospital with serious injuries.
The 18-year-old female driver of the car from Chelmer and the 55-year-old male truck driver from Leichardt were not physically injured during the incident.
The Forensic Crash Unit is investigating the crash.
If you have information for police, contact Policelink on 131 444 or provide information using the online form 24hrs per day.
You can report information about crime anonymously to Crime Stoppers, a registered charity and community volunteer organisation, by calling 1800 333 000 or via crimestoppersqld.com.au 24hrs per day.