Here fine dust information from the Ministry of the Environment Baden Württemberg. Applies to all countries. (…) In principle, air quality has clearly improved in recent years. Between 1994 and 2002 there has been a marked decline in the most important air pollutants (fine dust: -23%, NOx: -26%, benzene: -61%). At the beginning of 2005, however, the so-called PM 10 fine dusts have come to the attention of the public, because at this time the EU-Gren In Baden-Württemberg, too, for example, in Stuttgart, Mannheim, Freiburg, Pleidelsheim, Reutlingen and Tübingen. Stuttgart, with 187 days of exceedance, even occupies the national top position in 2005. Therefore, in the past year, air pollution was started. As the country’s first plan, the air pollution and action plan for the state capital Stuttgart was presented to the public on 17.12.2005. As the most important measures, it contains a truck ban for transit traffic, which has already been in force since 01.01.2006 and for the future, staggered year-round driving bans in the city area for the entire traffic. At the moment it is planned that from mid-2007, diesel vehicles of the pollutant class EUR O 1 and worse, as well as vehicles with petrol engines without controlled catalysts are no longer allowed to drive and this ban at a later date, is planned from 2012, to be extended to diesel vehicles of the EURO 2 standard. In other cities in Baden-Württemberg, where the fine dust limit values are also exceeded, it is likely that similar action will be taken. However, these driving bans are not, as with the previous ozone bans, weather conditions. Due to the specific characteristics of the particulate matter load, the driving bans set up for this reason must remain in force in the long term (!). Currently, it is planned that all diesel vehicles (cars, campers, buses, light and heavy commercial vehicles) will be divided into five categories of pollutants according to the particle limits of the corresponding EURO levels and the vehicles of pollutant classes 2 (e In the case of a qualified retrofitting of diesel vehicles with a particle reduction system, starting with EURO 1 driving trains, a height reduction into the next better pollutant class is possible. A qualified retrofit is given if the particle limit value of the next higher EURO level is met. In this case, the vehicle can be marked at the request of the holder, from d the vehicle registration point is divided into the next higher pollutant group and it is awarded a correspondingly higher-quality plate. Petrol vehicles with a regulated (!) catalyst and vehicles without combustion engines (e.g. electric vehicles) are marked with the plate 5. Petrol vehicles without regulated catalyst do not receive a plate. Due to the often high emissions no exception to these regulations is provided for for old cars.