Nearly a quarter million UK motorists have signed an official petition opposing the proposed use of GPS tracking systems to charge drivers a tax for every mile they drive. The petition currently has 230,044 signatures -- ten times more than its nearest competitor.

"The idea of tracking every vehicle at all times is sinister and wrong," the petition states. "Road pricing is already here with the high level of taxation on fuel. The more you travel -- the more tax you pay. Please Mr Blair -- forget about road pricing and concentrate on improving our roads to reduce congestion."

In another petition, 3,316 British motorcyclists demanded that the government halt the use of speed cameras against motorcycles because of concern over the accuracy of the speed measurement.

"Various devices have been proven to give inaccurate or false readings when used on motorcycles," the petition, which closes tomorrow, states.

Prime Minister Tony Blair introduced an "e-petition" system to serve as "a modern equivalent of the traditional petitions presented at the door of No.10." The road pricing petition is open for signatures on the Prime Minister's website until February 20. A counter-petition in support of vehicle tracking has just 15 signatures.