| Summary: | From March 16 - 18, 1988, an international workshop on inter sections without traffic signals will take place at the Ruhr University, Bochum. This book, which was compiled prior to the event, comprises the written versions of the contributions pre sented at the workshop. This preface is an attempt to give a short survey of the deve lopment of this particular field of traffic engineering. It has to be said in advance, however, that it is written from a point of view decisively influenced by the relevant German litera ture. Most of the intersections in our road networks are unsignaliz ed. At first glance, however, traffic engineers seem to be more interested in high-performance grade-separated or signalized intersections. But a closer study of the relevant literature does not confirm this apparent lack of importance. On the contrary: The subject of unsignalized intersections is still intensively dealt with at many research institutes. The German observer will notice the following fact while study ing the relevant sources: A remarkably high number of the au thors who have contributed to the investigation of unsignalized intersections in German-speaking countries have later become uni versi ty teachers. There is every reason to believe that traffic engineers primarily interested in theoretical problems have mainly been working in this field
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