
User-oriented information systems in public transport 165
Figure 1. Framework of users, tasks, systems, and context, as an adaption of
the ABC-Modell (Frese & Brodbeck, 1989).
set of needed information, which can be mapped to tasks and subtasks, as well as
stages of the travel chain.
Discussion
Although public transport is widely used, the application of human-computer inter-
action methods, to increase the quality of passenger information systems, is not yet
common practice. The described framework and case studies provide a base for fur-
ther work in this area and give an example on how developments in public transport
can be conducted, with more