Use of change blindness to measure different abilities to detect relevant changes in natural driving scenes

Drivers have to focus their attention on a danger to become aware of it. Change blindness paradigms are therefore relevant to studying the ability to detect danger. However, research has not yet focused on the role of two essential factors in guiding drivers’ attention: driving experience and the specific needs for performing a manoeuvre. Based on a previous analysis of real accident situations, we used a one-shot paradigm with static scenes to test observers’ ability to detect various changes as a function of their driving experience, the manoeuvre envisaged and the environmental context. The results showed that change detection depends greatly on driving experience when planning to cross a junction or to turn left, while it depends more on the environmental setting and task complexity when seeking a direction. The results were not conclusive, however, in explaining how drivers failed to notice that the vehicle ahead of them was turning when they considered an overtaking manoeuvre. We discuss the contributions of our research in relation to the possibilities of using change blindness as a measurement tool in studies on automobile driving.

► Change detection depended greatly on driving experience, the environmental setting and the task at hand.
► Change detection abilities reflect in some respect inability to detect hazard in real driving.
► Results were not conclusive when considering an overtaking manoeuvre.
► Change detection was strongly correlated with subjective judgement on manoeuvre difficulty.