Nine speed cameras in Sydney, Newcastle and Wollongong could come down following an audit of cameras across NSW.
The state's second annual speed camera review found that five fixed speed cameras and four red light speed cameras were "not working as well as they should".
They've have been earmarked for further investigation.
Roads Minister Duncan Gay says he's committed to using speed cameras only where they would improve road safety.
"I reject that speed cameras are about revenue raising," he said in a statement on Monday.
"In the five years before each of NSW's fixed speed cameras were installed, there were 3959 crashes at their locations, resulting in 61 fatalities and 2124 injuries.
"In the last five years, there have been 2460 crashes resulting in six fatalities and 1340 injuries."
On average, he said, fewer than one in 100 motorists who passed a speed camera were booked for speeding.
The cameras earmarked for further review are at Rankin Park, Sandgate, Ashfield, Bankstown, Fairfield East, Lambton, Mascot, Moore Park and Wollongong.
A more detailed review, due to be completed by February next year, will involve field inspections, crash analysis and community consultation, and could result in the cameras being removed or relocated.