If the pair win their claim, it could curb the Department of Transport's money-raising ability through speeding fines
Two motorists have gone to the European Court of Human Rights to contest current UK speeding laws.
Idris Francis and Gerard O'Halloran claim that forcing car owners to say who was behind the wheel of a vehicle caught speeding on camera breaches their right to silence.
The Government has pledged to "vigorously" defend current motoring rules which state that the driver has two choices - either to admit they were driving, or to refuse to provide information on the driver.
But if the pair win their claim, it could curb the Department of Transport's money-raising ability through speeding fines.
The campaign group Liberty is backing the two motorists, who turned to the Human Rights court when their objections were dismissed in domestic courts.
Mr Francis, from West Meon, Hampshire, refused to say who was at the wheel of his vintage Alvis when it was photographed in Surrey breaking the 30mph speed limit.
He said forcing him to provide evidence of the alleged offence breached his right not to incriminate himself.
Similarly, Mr O'Halloran, from London, objected because he said he faced a fine for not revealing who was at the wheel of his car when he was photographed speeding in Essex.
A Department of Transport spokesman said: "The UK Government does not accept this claim and is vigorously defending this case. We are confident of its defence, which has been upheld in the UK courts."