The rules set out in Title II apply to concession contracts by which contracting authorities, including when acting as a contracting entity, establish or implement cooperation in order to ensure that the public services for which they are responsible are provided with a view to achieving the objectives they have in common, where the following conditions are met:
1° The implementation of this cooperation is based solely on considerations of general interest;
2° The contracting authorities concerned carry out on the competitive market less than 20% of the activities concerned by this cooperation.
This percentage of activities is determined under the conditions set out in Article L. 3211-5.