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Assessing the physiological effect of non-driving-related task performance and task modality in conditionally automated driving systems: A systematic review and meta-analysis. | LitMetric

AI Article Synopsis

  • - In conditionally automated driving, drivers can take a break from vehicle control but must be ready to drive again when the system encounters situations it can't handle, which can lead to engaging in non-driving-related tasks (NDRTs).
  • - Engaging in NDRTs can negatively impact drivers' awareness and attention, especially if those tasks require visual or manual focus, highlighting the need for monitoring drivers' states for safety.
  • - A systematic review of 32 studies found that engaging in NDRTs increased physiological arousal (higher heart rate, more electrodermal activity) and noted mixed effects of visual/manual tasks on physiological responses, emphasizing the importance of understanding these interactions for driver monitoring system development and safety.

Article Abstract

In conditionally automated driving, the driver is free to disengage from controlling the vehicle, but they are expected to resume driving in response to certain situations or events that the system is not equipped to respond to. As the level of vehicle automation increases, drivers often engage in non-driving-related tasks (NDRTs), defined as any secondary task unrelated to the primary task of driving. This engagement can have a detrimental effect on the driver's situation awareness and attentional resources. NDRTs with resource demands that overlap with the driving task, such as visual or manual tasks, may be particularly deleterious. Therefore, monitoring the driver's state is an important safety feature for conditionally automated vehicles, and physiological measures constitute a promising means of doing this. The present systematic review and meta-analysis synthesises findings from 32 studies concerning the effect of NDRTs on drivers' physiological responses, in addition to the effect of NDRTs with a visual or a manual modality. Evidence was found that NDRT engagement led to higher physiological arousal, indicated by increased heart rate, electrodermal activity and a decrease in heart rate variability. There was mixed evidence for an effect of both visual and manual NDRT modalities on all physiological measures. Understanding the relationship between task performance and arousal during automated driving is of critical importance to the development of driver monitoring systems and improving the safety of this technology.

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Source
http://dx.doi.org/10.1016/j.aap.2023.107243DOI Listing

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