Through the fieldwork we found that it is necessary to monitor and share information about the sidewalks. There may be counter arguments that this is a waste of resources and effort. But my counter-argument is that building such a system is the equivalent of a seat belt for pedestrians, and according to CrashStats by CDC in 2017, in Pedestrian Location, only about 9% of injuries are in the non-trafic area, which is broadly defined as the sidewalk.