## 3 Results
### The Effect of Evacuation Distance on Exit Selection  
Table 1 represents a general description of the experimenter's exit selection in distance single-factor experiments. It can be seen from the table that when the distance to exit B is closer, the experimenter is more inclined to choose exit B, and the exit selection score is less than 0.5; as the distance gap between the experimenter and the two exits decreases, the experimenter chooses exit B. The number of experimenters who exited also gradually increased. When the distance between the experimenter and the two exits was equal, it was a turning point. The number of people who chose exit A and exit B was equal, and the score was 0.5. When the distance to exit A is closer, the experimenter is more inclined to choose to exit A.  
Figure 3: Experimental data processing process, they should be listed as: (**a**) Original evacuation trajectory; (**b**) Evacuation trajectory after calibration.  
Figure 4 shows the number of choices and trajectories of the participants on exit. Since the initial position is symmetrically distributed, only the right-side departure is shown in the figure. To facilitate statistics and data processing, during the evacuation process, the choice of exit A (left side) is recorded as \"1\" and the choice of exit B (right side) is recorded as \"0\". The line width represents the number of people who select the track. The exit choice behavior of pedestrians in the figure can be explained by the self-driving and repulsive forces in the social force model: as participants are closer to exit B, self-driving forces make them more inclined to choose exit B. As the distance between participants and the two exits decreases, the number of participants choosing the two exits gradually approaches zero. The turning point is when the exit distance is equal, and the same number of people decide to exit A and B. When outlet A is closer, the self-driving force makes participants more inclined to select outlet A; this indicates that the exit decisions of participants are significantly influenced by the distance between the participants and the exit, and pedestrians prefer to choose exits closer for evacuation. Analysis of variance shows that evacuation distance (F (6,77) = 5.81, \(p<0.01\)) significantly affects exit selection.  
On the other hand, most participants who chose the closer exit moved to the middle of the two doors for a certain distance and then chose an exit to evacuate according to the situation at this time. In addition, the moving distance decreases as the distance difference between the initial position of the two exits increases. Participants who chose the furthest exit ran to their chosen exit more decisively. This is mainly because in the experiment, the congested virtual pedestrians at the closest exit are approximately in front of the participant, and the virtual pedestrians overlap each other, which makes it difficult to judge the actual situation. This creates the illusion that there are more pedestrians here. For the case with a farther distance, the viewing angle is larger, and the visual effect of the number of virtual pedestrians at the farther exit is closer to the actual situation. As a result, it can be concluded that the angle between the exits of the participant will have a certain impact on the evacuation behavior of the participant.  
\begin{table}
\begin{tabular}{c c c} \hline \hline \(L_{A}\):\(L_{B}\) & **Average Value** & **Standard Deviation** \\ \hline
1.6:1.0 & 0.25 & 0.452 \\
1.4:1.0 & 0.25 & 0.452 \\
1.2:1.0 & 0.33 & 0.492 \\
1.0:1.0 & 0.50 & 0.522 \\
1.0:1.6 & 0.92 & 0.289 \\
1.0:1.4 & 0.92 & 0.289 \\
1.0:1.2 & 0.75 & 0.452 \\ Total & 0.56 & 0.499 \\ \hline \hline \end{tabular}
\end{table}
Table 1: General description of the experimenter’s exit selection in distance single-factor experiments.  
Figure 4: Choices number and trajectory of the participants under different distance ratios, they should be listed as: (**a**) The pedestrian selecting the exit A; (**b**) The pedestrian selecting the left B.