Motorists who break the speed limit on roads in Essex will be tracked using a camera onboard a helicopter.The scheme has been set up by Essex county council and uses state-of-the-art number plate recognition technology to identify cars travelling illegally.Essex Police has stated that it believes that use of the helicopter will allow officials to maintain evidence of speeding offences.It may also result in an increase in car insurance policies for drivers who are caught out, as cover firms may see them as an increased risk on the roads.Senior Traffic Management Officer Adam Pipe said: "It will also support specific road safety operations by providing information and intelligence to officers on the ground in addition to the helicopter's ability to disrupt and detect travelling criminals."This comes as statistics released by the Department for Transport show that some 2,943 people were killed on roads in the UK in 2007.