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approach, by minimizing the occupation of the driving simulator. These tools
enabled the application of several iterative cycles in development of the system by
integrating the results of the analyses progressively, according to their availability.
Needs in terms of
assistance
identified by
the society and safety
stakes
Planning of the UCD approach and
definition of tools
Specification of the assistance
V1
…
Vn
V2
Feedback
drivers
Intermediary
evaluation of the
Specification of the
assistance
assistance
Specifications of
strategies and HMI
Technical
constraints
Integrated
assistance system
Development and
integration of the
assistance
Analysis of
problems
encountered
Definitive assistance
and HMI system
Final ergonomic
evaluation
Figure 7.3.
UCD approach used for the design of the VIVRE2 system on a driving simulator
Traditionally, the UCD approach anticipates the iterative realization of contexts
of use at each new evolution of the system. In the case of the VIVRE2 project, apart
from the first series of analysis of driver-deliverer activities in a natural situation
with no assistance system, the intermediary evaluations of the system being
developed were carried out in a table and on a driving simulator (the realization of a
demonstrator did not enter into the scope of this project). Moreover, given the time
constraints, it was impossible to wait for the termination of contextual analyses to
initiate the first development cycle. The results were therefore integrated
progressively according to their availability, to define increasingly precise functional
specifications of the assistance. At the beginning of the project, these were basic
(types of user to be detected, type of information and control delivered by the
