“…Although studies using actual vehicles have been conducted (Kuiper et al, 2018;Mourad et al, 2017), quantitative data collection using a driving simulator and eye tracker is more common. Task completion time (Angelini et al, 2016;Jeong & Liu, 2017;Li, Chen et al, 2017;Weidner & Broll, 2018) and error rate (Angelini et al, 2016;Kula et al, 2017;Li, Chen et al, 2017;Weidner & Broll, 2018) are commonly used as dependent variables in assessing performance in IVIS tasks. The IVIS touch button studies closely related to the research described in this paper have mainly used task completion time as a dependent variable (Crundall et al, 2016;Feng et al, 2018;Kim et al, 2014).…”