"There was no advance warning. It just proves that this is a daily occurrence," she said.
Donaldson said she hoped if people knew the intersection was regularly targeted by police, driver behaviour might change.
She has also put signs at the intersection of Cranford and Berwick Sts that said: "Don't be that driver to kill a child", "Slow down", and "St Albans children matter".
But Donaldson now wants to keep the pressure on the Papanui-Innes Community Board to make some practical changes.
Board chairwoman Ali Jones raised the issue with police and they were patrolling the intersection the very next morning.
"Board members Emma Norrish and Jo Byrne met with a concerned mum who brought the issue to our attention and I contacted the Papanui police straight away," Jones said.
The board is now looking into getting a barrier to protect children standing at the intersection.
"We don't want to lose the momentum we've got going," Jones said.
The board will work with police to have regular stings at the intersection during peak hours and a red light camera in the area.
But the issue isn't only a problem in St Albans.
Jones recently attended a meeting at Shirley Primary School with city council staff, the school's deputy principal and police to address the same issue on Shirley Rd.
The community board is continuing to address the traffic issues in its ward - and new signs are expected in Shirley within weeks.