Information Technology Reference
In-Depth Information
The architecture of the
P@ss-ITS
system presented in Figure 2.1 fulfills three
essential functions: (1) the centralization of information coming from different
resources describing the functioning and state of the public transport network in real
time; (2) the diffusion of relevant and updated information to users; and (3) finally,
the elaboration of an answer adapted to personalized requests (itinerary demands,
travel schedule, travel modification, search, etc.).
The available information sources are:
-
operating aid systems
,
computing applications situated in the operating centers
of the different transport modes, the function of which is to assist operators in the
management of the network;
-
control stations
that mainly provide real-time information about the state of
road traffic in the area;
-
interactive media
that enable information to be distributed to users and ensure
the feedback of data to the system. This “dialog” is essential for elaborating a
personalized formulation of information in real time.
These data are processed by the system to deliver the relevant real-time message
in output. This will enable the user to carry out or pursue his trip, including in the
event of a disruption.
The realization of this application has served as a basis for the development of a
generic methodology for the design of interactive systems, RAMSES, the principles
of which are described in the following section.
2.4. RAMSES methodology for the collection, analysis and modeling of user
needs
The design of the
P@ss-ITS
project was based on an ergonomic approach to
collecting, analyzing, specifications modeling, and specifications evaluation of an
interactive information system. This project has served as a base for the
development of a specific study of the links between ergonomic and technological
data that are mobilized during the development of an interactive system [MOU 11].
The whole approach has the objective of favoring the transmission of different
knowledge that each of the specialists produces during the design process.
2.4.1.
Information flows in RAMSES
Each design player exerts an activity that generates knowledge. The approach
adopted in RAMSES, which stands for “Méthode de Recueil, d'Analyse, de
