Does anyone know exactly what the regulations are with regard to cars of a certain age and with a diesel engine being banned from some cities? Specifically, (1) Which cities in Belgium now ban such cars. (2) Are cameras already in place so that drivers will be fined? (3) Are these cameras at the entrance to the city or spread throughout the cities as is the case in inner London? (4) Can one drive on the ring or in the countryside with such cars? Is this information published by the government and if so, where? Is similar information available for other Benelux countries and Germany and France?