Experimental investigation on the evacuation performance of pedestrians in a three-lane urban tunnel with natural ventilation in a fire scenario

This paper presents a field experimental study of several participants’ evacuation behaviour in fire-induced smoke bidirectional six-lane, urban tunnel with natural ventilation. Ceiling openings vertical shafts are equipped as ventilation and provide large amount sunlight into the daytime, increasing illuminance assisting fire emergency. In this study, route choice, movement time, physical condition reaction to technical installations were recorded discussed evaluate evacuees’ performance. Human factors including pedestrians’ gender, age emotional state taken consideration. Besides, characteristic ceiling its impact on human systems settings analysed. The results experiment analysis suggest has positive evacuation. also leads guidance strategies tunnels puts forward suggestions regarding tunnel, such way-finding signs continuous light.