A motorcyclist was seriously injured after reportedly losing control while driving in the shoulder on the Highway 401 westbound ramp to Highway 427.

Provincial police were called to the scene Monday afternoon.

The driver, a 33-year-old man from Toronto, was reportedly driving in the shoulder on the ramp to Highway 427 southbound when he lost control and collided with a vehicle.

He was taken to hospital with serious, but non-life-threatening injuries.

Several lanes were blocked, but have since cleared.