Transport for London (TfL) is to roll out new technology that will see cars fitted with automatic speed limiters in a six-month trial.
The scheme will see the Intelligent Speed Adaptation (ISA) technology installed in 20 cars, a London bus and a licensed taxi.
The system allows drivers to opt for their acceleration to be stopped automatically when the vehicle reaches the speed limit of the road they are travelling on.
Driver behaviour, journey times and the effect on vehicle emissions of driving within the speed limit will all be monitored during the trial. Results will be compiled in a report to be submitted to London Mayor Boris Johnson and the technology will then be made available to external organisations.
Southwark Council in south London has already expressed an interest in fitting ISA to more than 300 of its vehicles after estimates showed that if two thirds of drivers in the capital used the system, the number of road casualties could be reduced by 10%.
The head of TfL's London road safety unit, Chris Lines, said: "We know the technology works, and now we want to know how drivers in all types of vehicles respond to it."
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