Forward-facing speed cameras are to be tried out in London to stop drivers from blaming other people for their offences.
The cameras will take a photo of a speeding driver's face, making it difficult for them to say they were not behind the wheel.
They will be introduced at two sites in Upper Thames Street in central London.
If successful, the trial could lead to more sites being considered by the London Safety Camera Partnership.
The new cameras will take a digital image of the front of speeding cars, while a traditional speed camera will capture an image from the rear.
Legal loopholes
London mayor Ken Livingstone's road safety ambassador, Jenny Jones, said: "These additional cameras are aimed at the minority of drivers on London's roads who think they can break the law and get away with it.
"We are determined to close the legal loopholes, catch the rogue drivers who put others at risk, and have a consistent approach to traffic law enforcement in London."
Chris Lines, head of Transport for London's road safety unit, added: "Some motorists believe they are above the law and should be able to speed without facing the legal consequences.
"Speed is a contributory factor in a third of fatalities in London and we hope trialling these cameras will enable us to stop motorists who endanger lives by speeding."
Ten forward-facing cameras have been trialled in Essex over the past two years.
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