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Allocation of Driver Attention for Varying In-Vehicle System Modalities.

Ning Li1, Linda Ng Boyle1

  • 17284 University of Washington, Seattle, USA.

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Summary
This summary is machine-generated.

Drivers using visual-only in-vehicle systems experience higher cognitive workload. Attention allocation varied based on task difficulty and time, impacting response times in driving simulations.

Keywords:
cognitive workloaddetection response taskdriver distractiondriving simulator studysecondary task

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Area of Science:

  • Human-computer interaction
  • Automotive engineering
  • Cognitive psychology

Background:

  • In-vehicle information systems (IVIS) can increase cognitive workload, affecting driver attention and response times.
  • Understanding how drivers allocate attention between driving and IVIS interaction over time is crucial for safety.

Purpose of the Study:

  • To examine drivers' attention allocation and response times to a tactile detection response task (TDRT) during IVIS interaction.
  • To identify factors influencing TDRT response time in varying in-vehicle environments over time.

Main Methods:

  • A driving simulator study involving 24 participants and a restaurant selection task (easy/hard) across audio-only, visual-only, and hybrid modalities.
  • Analysis using linear mixed-effects models to identify factors affecting TDRT response time.
  • Nonparametric time-series modeling to explore visual attention allocation in hybrid mode over time.

Main Results:

  • Visual-only IVIS interaction significantly increased TDRT response time compared to audio-only.
  • Female drivers exhibited longer TDRT response times when using IVIS.
  • Attention allocation varied: visual components were favored later in easy tasks and earlier in hard tasks.

Conclusions:

  • Visual-only IVIS modes increase driver cognitive workload more than audio-only modes.
  • Drivers dynamically adjust visual attention strategies based on task difficulty and time within the IVIS.