A motorcyclist is in hospital with critical injuries after a crash on the exit ramp of the westbound Highway 401.
OPP say around 6 p.m. Saturday the bike was exiting the highway at Keele Street when, for unknown reasons, the driver lost control of the vehicle.
The motorcycle then left the roadway and struck a sign.
The ramp was closed until just before 8:30 p.m. while police investigated.
Police are asking anyone who may have witnessed the crash to contact them at 416-235-4981.