Congestion perception (IMAGE) University of Tokyo Caption It might look like something from a physics paper, but this is actually a plot showing how people’s perceptions of an enclosed space change depending on how impeded the crowd was by an obstacle. Blue colors reflect people within the crowd who were more frustrated in the space, and red colors reflect people who were more at ease. In each case, w is the width of the obstacle, and d is the distance between the obstacle and the exit. Credit ©2022 Jia Xiaolu et al. Usage Restrictions Credit ©2022 Jia Xiaolu et al. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.