As agreed during DTP8 B. Coleman provided an initial draft proposal on how to deal with family concepts within the GTR (see Doc WLTP-DTP-09-02). Despite regional differences family concepts are a fundamental and indispensable part of the process of vehicle approval/certification. The group concluded that the revision and redefinition of family parameters is necessary and possible. A Family concept is belonging to type approval issues but at least defining guidelines inside a GTR should be possible. The DTP chairman confirmed the importance of family concepts. Therefore the DTP-group decided that family concepts (or at least guidelines for family concepts) should be part of the GTR.

The presented document will be circulated within the DTP-Group and re-discussed during DTP10. All contracting parties are asked for comments to this paper until DTP10.

Objective of DTP 10 is to give a clear advice, how to deal with family concepts within the GTR.