Bus deregulation has been successful on radial routes in major urban conurbations, where the service in peak times is often better than it was.

Among the big urban conurbations, Greater Manchester now ranks third, after London and Birmingham, with a population of around 2.6 million.

Private car ownership levels are high, and like many major urban conurbations Kingston suffers from frequent traffic jams and pollution.

Greater Porto is an urban conurbation with a population of some 1.6m.

Its solution, outside the urban conurbations, was unitary multi-purpose authorities (with from 250,000 to 1 m inhabitants).

A number of other companies operate suburban passenger trains in urban conurbations.

Together, the Muara-Serasa areas form the largest urban conurbation in the mukim.

That's a small percentage when you think that more than 70% of the population lives outside an urban conurbation.

Finally, although not an EU issue we must encourage Member States to do more to retain green spaces and playing fields in major urban conurbations.

This has the aim of reducing background concentration and will have a positive effect on the protection of human health particularly in urban conurbations.