Testing Road Vehicle User Interfaces Concerning the Driver’s Cognitive Load

This paper investigates the usability of touch screens used in mass production road vehicles. Our goal is to provide a detailed comparison conventional physical buttons and capacitive taking human factor into account. The pilot test focuses on specific Non-driving Related Task (NDRT): control on-board climate system using screen panel versus rotating knobs push buttons. Psychological parameters, functionality, and, ergonomics In-Vehicle Information Systems (IVIS) were evaluated questionnaire, scale (SUS), workload assessment (NASA-TLX), physiological sensor system. measurements are based wearable eye-tracker that provides fixation points driver’s gaze order detect distraction. closed for naturalistic driving study was provided by ZalaZONE Test Track, Zalaegerszeg, Hungary. Objective subjective results indicate panels causes higher visual, manual, cognitive distraction than use statistical analysis demonstrated techniques need be complemented better represent behavior differences.