A traffic light assistant on a smart phone is assessed with an eye tracker in real traffic. The system is displayed on three different screen sizes on a nomadic device and gaze durations are measured. Another condition of the experiment includes an acoustic click when the display content changes to reduce glance frequency. The acoustic click as an auditory hint does not reduce the frequency of gazes, as expected. The gaze durations can get shorter as display size increases, but this does not necessarily reduce the percentage of time an in-vehicle information system (IVIS) is looked at. Subjective ratings indicate that display contents can even be shown too big. Overall, the gaze durations are in line with current limits, even when displayed on a small screen. A set of gaze histograms and calculated gaze metrics is provided to enable comparison with other experiments and IVIS.     «

A traffic light assistant on a smart phone is assessed with an eye tracker in real traffic. The system is displayed on three different screen sizes on a nomadic device and gaze durations are measured. Another condition of the experiment includes an acoustic click when the display content changes to reduce glance frequency. The acoustic click as an auditory hint does not reduce the frequency of gazes, as expected. The gaze durations can get shorter as display size increases, but this does not nec...     »