The equally sensitive proposals for urban road charging and workplace parking levies, however, fall under the remit of local authorities (also elected). The Department of the Environment, Transport and the Regions insists, however, that it wants to be certain of the tolling technology before moving forward.
A spokesman for the DETR said: 'The technology is not up to the stage where it can be used yet. It is no good introducing powers for something that you cannot do. The technology needs to be thoroughly tested in all weathers before we can be certain that it would be right for use on the motorway network.'