Woman dies after her car rolls backwards onto her, with her two children inside.

A Melbourne woman, 32, died when her car rolled backwards down the driveway of her Cragieburn home and ran her over this afternoon.

Channel 7 reports she had gotten out of the car to investigate if she’d hit a water meter while reversing.

It is believed she failed to put the car into the “park” position before leaving the driver’s seat.

Both her children, a seven-year-old son and a four-year-old daughter, were in the car when the incident occurred.

Neither of them were harmed and the eldest reportedly ran from the car to call Triple-zero and also his father, who was at work at the time.

A neighbour came out to help after she heard the children screaming, but the woman died at the scene.

"This is a bad day out for everybody," Sergeant Dean Pickering told the media.

"We have got young kids involved, we have got young family members. We are all in the same boat - we have young kids and young family members too."

Police are in the process of preparing a report for the coroner.