Speed cameras are designed with road safety in mind, slowing drivers down in areas where accidents are known to regularly occur.
As well as this benefit, they are also used to police the UK's roads, catching speeding motorists at all times of the day and night, with fines being paid by offender to the government.
New information has revealed that the ten speed cameras most often activated by motorists in the UK generated income for the state of £12 million in just three years, a Freedom of Information request from The Sun revealed.
The statistics will bolster campaigners that believe speed cameras are now used as a means to take money from drivers, rather than improving road safety. With figures indicating that 200,000 motorists were caught speeding by cameras in England and Wales adding to their cause.
Each of the top ten most lucrative speed cameras caught a minimum of 10,000 people breaking the law in just three years, with the camera in top spot recovering fines of £1,932,300 from motorists in the Stockport area.
Members of the Taxpayer's Alliance claim the figures indicate speed cameras are for making money, rather than safety on the UK's roads.
Matthew Sinclair, the chief executive of the organisation, said: "It's incredible that just a tiny number of cameras are raking in so much cash at motorists' expense. The authorities should focus on measures that improve the safety of the roads, not simply look to maximise the amount brought in from fines."
Road safety charity Brake defended the importance of preventing speeding in areas known as accident blackspots.
Ellen Booth, campaigns officer for the charity, said: "Rigorous academic studies have shown fixed speed cameras are exceptionally effective in reducing speeds, crashes and casualties, preventing families going through the unnecessary trauma and pain of a road death or injury.
"It's important to remember that cameras only catch drivers who are breaking speed limits, and these drivers are putting others at risk by speeding."