Navigable path networks are generated or modified based on attributes of tasks to be performed by autonomous vehicles traveling thereon, attributes of such vehicles, or attributes of the environments in which such networks are provided. The networks include traditional and non-traditional transportation features, and are defined based on prior travel within the environments, including information gathered by such vehicles during such prior travel. The autonomous vehicles are robotic, self-powered units having storage compartments for carrying objects between points of the networks. An optimal route within a navigable path network is selected based on attributes of an autonomous vehicle, a task to be performed by the autonomous vehicle, or the various paths within the network. A navigable path network is updated based on information subsequently learned regarding the environment, including information captured by autonomous vehicles traveling on paths of the network.