The world's slums lack not only large, easy to travel roads, but they're also missing a lot of the infrastructure that goes along with them: street signs, building numbers, and vehicle access to building exteriors.

世界上的贫民窟不仅缺乏便于通行的宽阔道路，而且还缺少与之相伴的许多基础设施：街道标志、建筑编号以及通往建筑外部的车辆通道。