Figure 3
From: Characteristic time in highly motivated movements of children and adults through bottlenecks
Definition of exit region and incident angle in pre-school children’s experiment. The exit region consists of a rectangle and two 1/4 circles (grey regions). The angle α between the vector \(\overrightarrow {OA}\) and vector \(\overrightarrow {OB}\) represents the incident angle of pedestrians. The angle between \(\overrightarrow {OA}\) and \(\overrightarrow {OB}\) is defined as incident angle. Point A represents the entering exit region position of the pedestrian.
