The Associate Minister of Transport is considering bringing in a new kind of speed camera the previous Government dropped over concerns they could be used to spy on motorists.
The cameras take two images at different points along a road, and calculate vehicles' average speeds to see if any have been speeding.
Julie Anne Genter says they've been "extremely successful" in Australia, Europe and the UK.
"We are currently considering how they can be rolled out in a fair and effective way here in New Zealand," she told NZME, saying they are more accurate than traditional speed cameras, which take a single image.
The National Government considered the new cameras, but opted against them.
"We will be surveilling New Zealand citizens - I think people should feel a bit uncomfortable about that," National transport spokesman Brett Hudson told NZME.
That's because the cameras take images of many cars at once, before any of them have even been spotted speeding.
Mr Hudson also called it "revenue-grabbing". Ms Genter said revenue was a "result" of people breaking the law and speeding.
Dozens of new cameras have been installed in recent months in what police say are high-risk areas.