Skill-development when interacting with in-vehicle information systems: A training study on the learnability of different MMI concepts

Elements of skill-development in using in-vehicle-information-systems are discussed, followed by results of an on-the-road study. Entering of a destination into a route guidance systems was practised by 12 drivers while driving on routes with reduced traffic. Each driver performed 68 to 100 training trials. Two route guidance systems were used which differed in user interface. Mean duration of destination entry and mean frequency of glances to the in-car task diminished with practice and varied with difficulty of route. Individual differences in performance and skill acquisition were also found, while task demands remain high after practice. Differences between user interfaces are apparent in performance.