Pedestrian dynamics animal behavior 4 ant 4 concentration response 4 controlled study 4 evacuation time 4 nonhuman 4 population dynamics 4 Accident Prevention 2 Ant egress 2 Article 2 Biological agents 2 Competitive evacuation dynamics 2 Computer simulation 2 Conflict situation 2 Controlled experiment 2 Crowd egress 2 Direction of motion 2 Dynamics 2 Egress 2 Emergency 2 Emergency egress 2 Evacuation 2 Evacuation dynamics 2 Evacuation time 2 Experimental characterization 2 Experimental evidence 2 Faster is slower 2 Humans 2 Image processing 2