Negative emotion degree in smoke filled tunnel evacuation

• Conduction of walking speed experiments by a full-scale tunnel with smoke. • Walking speeds were almost slow and very slow. • Validation of physiological signal-based negative emotion by subjective feeling. • Negative emotion degree investigated by physiological signal-based negative emotion. • Low score of stress tolerance impacted to the negative emotion increase. In this study, the subjective feelings from questionnaires, the physiological signals-based emotions, and walking speed were investigated by a full-scale smoke-filled tunnel experiment. The physiological signals-based emotions were compared by the subjective feelings. The present mean speed was slower than the results of previous studies regarding evacuation in smoke, and close to the completely darkened walking speed, even the participants who were familiar with tunnels. The negative emotion degree via physiological signals, which was determined by the heart rate change rate, was anxiety > fear up to Cs = 1.0 m −1 and then switched to fear > anxiety over 1.0 m −1 . It could be considered that the fear might be large with smoke density due to their present threat (not future threat). The tendency of the mean walking speed by negative emotion via physiological signals was the same as the negative emotion degree in smoke.