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We describe the design of a mobile information service that provides users with a route-planning tool for the tram-based public transport system of Melbourne, Australia.The design sketches for TramMate represent early iterations of an ongoing design process based on data from field studies on the use of transportation by business employees who, during a typical workday, have to attend appointments at different physical locations.TramMate supports this activity by keeping track of contextual factors such as the userís physical location, upcoming appointments, and real-time travel information.The design is integrated with an electronic calendar and alerts the user when it is necessary to commence the journey.
Kjeldskov et al. (2003) studied this question.