Identification and localization of accidents in horizontal arches (Case study: Babameydan-Basht axis)

Today, research on road accidents, especially in horizontal arches, is considered a scientific and applied research. Researchers have come to the conclusion that accidents are not just a specific cause but a series of different causes and events, both human and non-human. The purpose of this study is to identify and localize the causes of accidents in horizontal arches on the Babamidan-Basht axis. The research method is descriptive-survey in terms of implementation and applied research in terms of purpose, which has been done quantitatively. Because the subject of the present study is a specific topic in the field of roads (engineering and road construction), non-probabilistic sampling is of a judgmental type. The statistical population of the study includes 12 experts, experts and engineers in the field of road construction in Fars province. In this research, by studying the latest previous domestic and foreign research as well as field research, the causes of accidents in horizontal arches have been identified and then localized using the opinion of experts and fuzzy Delphi method. After distributing and analyzing the questionnaires, the result was that out of 22 identified factors for the occurrence of accidents in horizontal arches, according to experts, 13 factors for the Babamidan-Basht axis were finally confirmed. At the end of the research, in line with localized factors, some practical suggestions for improving and reducing accidents in the horizontal axes of Babamidan-Basht axis are presented.