Although the girl was taken to hospital, she suffered only minor cuts and bruises.
The police say that the driver of the tanker – a 54-year-old man – was spoken to at the scene.
The girl had just stepped out of a school bus at around 4.30 pm before attempting to cross the road from behind the bus when she was hit.
The vehicle that hit her is described as a white DAF fuel tanker.
Police officers spoke to witnesses at the scene and closed the road for a short time.
Anyone with any information is asked to call the police on 612612 or the anonymous Crimestoppers number 0800 555111.