Just been reading that plans to being in an enforced speed limit of 60mph on 2 sections of motorways have been shelved for 18 months to allow the Highways Agency to come up with alternate ways of reducing pollution on a section of the M1 in Derbyshire and some of the M3 near Surrey.
Seems all sorts of suggestions have been proffered with even the possibility of banning high polluting vehicles at certain times. Not sure how that would work from a hauliers point of view though.
It was hoped that the more fuel efficient, therefore less polluting vehicles would have had a greater impact on the pollution however its reported that these are taking longer to become the higher percentage of road users.
Looks like they are trying to copy what happens around me locally with the hard shoulder on the M42 used at peak times to ease traffic flow. Be interesting to see how this goes as it does seem to work.