Emergency evacuation is an important disaster response action. Recent frequent instances of natural and man-made disasters necessitate effective evacuation planning. It involves factors such as road network properties, street geometry, path risk, and environmental information. Such plans are difficult to implement because of the complex psychological reactions of the affected people during an emergency. For instance, in flood disaster preparation, the responsiveness and resilience of a community at risk are crucial. However, little is known about how informal settlement dwellers negotiate their surroundings during evacuation.