Design Considerations
EasyTransport features a dual mode of operation depending on the type of information the user intends to extract. In the first mode, Navigation, the system directs a user's transition from a starting point to his or her destination. It traces the shortest paths, typically multiple if any, that connect them. In the Transportation mode, EasyTransport combines all available transport options along each path generated during Navi-gation. These options can include all means of public transportation such as buses, trains, and even planes and boats-supporting the notion of multimodal trans- portation. The two modes of system operation are inter-dependent: Navigation must precede Transportation.