Emergency crews were called to the crash on Wellington Road 124 near Sixth Line at around 5:30 p.m.
OPP said a silver sedan and a school bus collided head-on, and a young man was rushed to a trauma centre with life-threatening injuries.
A teenager in the car was also taken to hospital, but her injuries are considered non-life-threatening.
The woman driving the school bus was treated for minor injuries at the scene.
Police said no one else was on the bus at the time of the crash.
Local male and female in sedan transported to hospital with serious injuries after head-on collision with school bus on @wellingtncounty rd 124 in @TownofErin. Female drive of bus was only occupant, minor injuries. Expect delays for investigation^JC #WellingtonOPP pic.twitter.com/o6I7eaaXGC
— OPP West Region (@OPP_WR) August 16, 2019
Neither the identities of those involved nor their ages were provided by OPP.
Wellington Road 124 was closed for several hours but has since reopened.
The cause of the collision is still underway, and police said it’s too early to comment on any possible charges in the investigation.
Wellington County OPP is asking any witnesses to contact them at 1-888-310-1122.
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