From what I can see, the action is required on those town centres with lots of diesel vehicles, where air pollution is very high for extended periods. There are apparently only 16 UK cities having districts with really bad traffic pollution, though the same rules will apply to other European cities. I hear Athens and Milan are very bad. I hear quite a number of diesel car-owners are dissatisfied with their particle collectors, which need a good fast run to clear them, and some remove or disable the device. I reckon the tax privileges that used to accrue to diesel car drivers will go into a steep reverse.
In Central London, there are vast numbers of black cabs and red buses, so it will cost something to convert or replace them, since they cannot practicably be banned. As there is a so-called congestion charge which keeps out people who pay their own bills, it will be easy to winch up the charges but will not affect the prosperous.
Other busy city centres will perhaps have a less simple job. Maybe they will divert traffic around the really bad spots or limit access in peak hours. The idea of restricting heavy vehicles from the city during the working day was used by the ancient Romans.
In Central London, there are vast numbers of black cabs and red buses, so it will cost something to convert or replace them, since they cannot practicably be banned. As there is a so-called congestion charge which keeps out people who pay their own bills, it will be easy to winch up the charges but will not affect the prosperous.
Other busy city centres will perhaps have a less simple job. Maybe they will divert traffic around the really bad spots or limit access in peak hours. The idea of restricting heavy vehicles from the city during the working day was used by the ancient Romans.
