“…There is a fundamental requirement on the design principle to keep the "operator" informed about the system's intentions and current operating modes (Debernard, Chauvin, Pokam, Langlois, 2016). The Proximity Compatibility Principle and salient design have been applied not only in aviation (Ding & Proctor, 2017;Li et al, 2019), but also unmanned vehicles (Calhoun, Ruff, Behymer, & Frost, 2018), automation technology (Yamani & McCarley, 2018), electronic medical records (Zahabi, Kaber, & Swangnetr, 2015), digital alarm systems in nuclear power plants (Liu, Hwang, Hsieh, Liang, & Chuang, 2016). The presentation of proximity information must be salient and distinctive to uphold operator's perception and support 'at a glance' information retrieval by employing pre-attentive cues such as colour, shape, opacity, or texts (Bennett & Flach 2011;Selkowitz, Lakhmani, & Chen, 2017).…”