Selected Issues in Crowd Evacuation Under Panic Conditions

This article reviews and discusses the behaviours and patterns associated with panic evacuations, as documented in the literature, which must be considered when analysing and modelling such events. Where possible, diverse perspectives from existing research have been contrasted with the author’s own observations and reflections. Structured as an overview, the article introduces subsequent analyses and highlights several non-intuitive questions that arise during the investigation. The study examines the relationship between movement velocity and crowd density, comparing experimental data with simulations conducted to date. It explores the connections between flow rate, crowd density, and ve-locity, and suggests potential directions for further research in this field. Additionally, the article addresses the loss of evacuation coordination under crowding conditions and pre-sents studies that demonstrate optimal evacuation at speeds that differ from the so-called comfortable pace. The positive effects of strategically placed obstacles in reducing conges-tion and improving evacuation times are also analysed. This literature review is conduct-ed from a practical perspective, with the primary aim of deepening our understanding of panic evacuation phenomena. Furthermore, the article categorises the impact of various phenomena associated with stampedes and panic evacuations on the requirements for safe evacuation. A tabular summary of the technical and structural measures for evacua-tion is provided, which may prove useful in designing effective evacuation strategies when dealing with heightened emotional states among evacuees.