The definition of concepts such as "heavily frequented sites", "types of location" or "types
of site occupation" is based on important research of Swiss, German, French, Austrian
and Belgian bibliography. This is systematically analysed according to certain parameters
relating to movement and defined in advance.
In other respects, this work is based on a study of actual situations carried out in German-
and French-speaking Switzerland. At the same time as evaluating existing documentation,
surveys were undertaken (questionnaires, counting, etc.) for all 15 case studies.
These analyses make it possible to highlight the categories of heavily frequented sites;
the characteristic determinants of resulting movement according to the type of installation; the idea of statistical data input aimed at the continuous improvement of databases
concerning heavily frequented sites; and certain information relevant to the future planning
of these.