Highway 6 has reopened north of Hepworth after a two-vehicle collision.
Grey Bruce OPP, South Bruce Peninsula firefighters and Bruce County Paramedics responded to the collision.
Four people involved in the crash were transported by ambulance to local hospitals, with one individual being flown to a trauma center with non-life-threatening injuries.
As a result of an OPP investigation an 85-year-old from New Hamburg was charged with careless driving.
Highway 6 was temporarily closed between North Diagonal Road and Spring Creek Road in the Municipality of South Bruce Peninsula during the investigation, the road has since re-opened.
The OPP say they want to thank the community for its patience and understanding while the road was closed.
The Grey Bruce OPP is requesting anyone with information to call 1-888-310-1122. Should you wish to remain anonymous, call Crime Stoppers at 1-800-222-8477 (TIPS) or submit a secure web-tip at www.cstip.ca, where you may be eligible to receive a cash reward of up to $2000.