Ontario Provincial Police say 15 people suffered minor injuries after a tour bus crash north of Barrie, Ont., on Sunday.

The collision occurred at approximately 10:20 a.m. on Highway 11 near 4 Line North in Oro-Medonte.

The chartered bus, which had 32 passengers on board, hit a construction sign on the side of the road, police said.

Fifteen people were transported to hospital to be treated for minor injuries. The other 17 passengers were unharmed. They boarded a different bus and continued on with their trip.

One lane of Highway 11 was closed as emergency crews responded to the accident, but was reopened at approximately 1 p.m.

Police say they are investigating the crash.

"We'll look at driver actions," OPP Sgt. Larry Faulkner told CTV Toronto. "Weather doesn't appear to be a factor."