Mobile Internet access via smartphones puts demands on in-car infotainment sys- tems, as more and more drivers like to ac- cess the Internet while driving. Spoken dialog systems support the user by less distracting interaction than visual/haptic- based dialog systems. To develop an intu- itive and usable spoken dialog system, an extensive analysis of the interaction con- cept is necessary. We conducted a Wizard of Oz study to investigate how users will carry out tasks which involve multiple ap- plications in a speech-only, user-initiative infotainment system while driving. Re- sults show that users are not aware of dif- ferent applications and use anaphoric ex- pressions in task switches. Speaking styles vary and depend on type of task and di- alog state. Users interact efficiently and pro...

Click Here to View the Paper In XML Format