Since validity in the various investigations is still not very great, it would seem advisable firstly to make a given technique reliable enough (because this is the primary requirement for a measuring instrument) so that it will ultimately improve validity. The foregoing implies that no opinions can yet be expressed regarding road safety if urban planning projects are to be evaluated by means of a conflict technique. By using a conflict technique, reliable information can, however, be obtained on certain kinds of encounter that occur, for instance, in a residential yard (shared space). Since the various conflict techniques have not so far proved reliable or valid in most cases, it is advisable to use them in situations where very few, if any, accident statistics are available or where an initial impression of the situation is required.
Abstract