A 39-year-old woman was seriously injured in a two-vehicle collision near Chesley, north of Hanover.
The crash occurred shortly before 4 p.m. Thursday at Concession 12 and Side Road 25 in Brant Township.
It involved an SUV and a tractor.
According to South Bruce OPP, the driver of the SUV ended up in a London hospital with serious injuries. Her passenger was taken to a local hospital for treatment of less severe injuries.
Police continue to investigate the cause of the crash.