POLICE are appealing for public assistance after a woman was seriously injured during a hit and run traffic crash in Leichhardt on Sunday (May 7).

A 32-year-old Leichhardt woman was crossing at the traffic lights on the Toongarra and Samford Road intersection after 7pm when she was struck by a motorbike.

Police said the rider, who was knocked from the bike, drove away from the scene along Toongarra Road towards the city without offering assistance to the woman.

The woman was transported to Ipswich Hospital with serious head and leg injuries.

The orange and white off-road motorcycle can be seen in CCTV footage being driven erratically and driven through a red light on Toongarra Road prior to the collision.

Anyone who recognises the rider or the motorbike is urged to immediately contact police on 131 444.