A 32-year-old man following a collision in Melton West on Sunday.
It is alleged a bus collided with a motorcycle on High Street about 4.15pm.
The rider, a 43-year-old Melton man was taken to hospital where he remains in a critical condition.
It is believed three passengers were on board the bus and were not injured.
The bus driver, a Strathtulloh man, has been charged with dangerous driving causing serious injury.
He was bailed to appear in court on May 9.