According to Articles 6 to 14 of Directive 2008/50/EC of the European Parliament and of the Council (15), the two following areas have been defined for Luxembourg:

(1) One area, called here “Active”, groups historical LCPU and CES districts as well as all cities where a high urbanization degree (1 or 2) and cities with a lower degree but which are surrounded by cities with a higher degree and impacted by traffic. Some cities from the border of the country (Germany/Luxembourg) filling these criteria have also been considered.

Isolated cities of the urbanization map belonging to the same district and located between cities with high level of urbanization and showing high level of traffic have also been included in the Active area.

(2) The second area, called “Rural” represents the area of the country where the traffic, the density of inhabitants and the number of industries are low. The total number of inhabitants of this area would be 151097 for 2021.