Police are appealing for witnesses or dashcam footage following a hit and run in Laverton North last night.

Investigators have been told a motorcycle rider collided with an unknown vehicle on the entry ramp of the Western Ring Road, near the Princes Freeway about 6.25pm.

The rider, a 42-year-old Altona North man, was thrown from his motorcycle and suffered non-life threatening injuries.

He was taken to hospital for treatment.

It is believed the driver of the vehicle fled the scene without rendering assistance.

Anyone with information or dashcam footage is urged to contact Crime Stoppers on 1800 333 000.