  With modern IVIS becoming more capable and complex than ever, their
evaluation becomes increasingly difficult. The analysis of large amounts of
user behavior data can help to cope with this complexity and can support UX
experts in designing IVIS that serve customer needs and are safe to operate
while driving. We, therefore, propose a Multi-level User Behavior Visualization
Framework providing effective visualizations of user behavior data that is
collected via telematics from production vehicles. Our approach visualizes user
behavior data on three different levels: (1) The Task Level View aggregates
event sequence data generated through touchscreen interactions to visualize
user flows. (2) The Flow Level View allows comparing the individual flows based
on a chosen metric. (3) The Sequence Level View provides detailed insights into
touch interactions, glance, and driving behavior. Our case study proves that UX
experts consider our approach a useful addition to their design process.
