5. Conclusion and next steps
A current state of research on public participation in urban planning by digital means covers many facets. While the original concepts of public participation were primarily motivated by environmental and societal challenges as well as public participation in governance, topics of urban planning gained increasing importance especially during the last two decades. Against that background much research was done on phenomena such as participant selection, communication channels and methods. While most of the approaches of public participation in the pre-digital era dealt with small groups of participants and face-to-face workshops, the use of digital tools adds opportunities to easily involve large numbers of participants as well as to overcome restrictions of joining the same locality. Furthermore, several challenges arose, as for instance to extract information of relevance or to deal with heterogeneous technical prerequisites and communicational strategies. Against that background this article determines a state of the art on public participation in urban design planning by using digital tools. Due to the vast amount of research on public participation as well as the plurality of approaches and disciplinary domains involved, this article may strive for providing an overview on that topic and related aspects but will be limited in providing a comprehensive and complete view on a state of the art. Moreover, many topics of relevance could be dealt with only briefly and are discussed in more detail in further publications [10, 86]. A next step will be to further conceptualize a participative platform design taking the derived best practice and implications into concern. Since weaknesses of many previous research projects on digital tools for public participation are their poor involvement and testing in practical scenarios as well as often insufficient assessment and validation, our special regards are on intensive user testing and evaluation in real-life planning projects.