"That there is an indication of what would've happened to her head of she hadn't been wearing a helmet," he said.
"That would've been her head."
He understood the woman was travelling west on 11th Ave and turning right into St John St when the crash happened with a car travelling east on 11th Ave in the left lane.
5.41pm: Traffic is down to one lane after a crash between a bicycle and a car at the intersection of 11th Ave and St John St tonight.
The crash happened at the busy intersection about 5.30pm.
A reporter at the scene said St John were attending a woman who was lying on the road and a bicycle was on its side on the footpath nearby.
A car is parked behind the crash scene has a shattered windscreen.
Traffic heading towards the Cameron Rd intersection is down to one lane.