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Evaluate driver response to active warning system in level-2 automated vehicles.

Jonathan R Atwood1, Feng Guo1, Myra Blanco2

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Drivers adapt to in-vehicle alerts, receiving fewer inattention prompts over time when using Level 2 automated driving systems. This suggests active safety warning signals encourage sustained driver attention.

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Active safety warningDriver adaptationDriver responseLevel-2 automated vehicleTraffic safety

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Area of Science:

  • Human-Computer Interaction
  • Automotive Safety
  • Cognitive Psychology

Background:

  • Increasing prevalence of automated vehicles necessitates strategies for maintaining driver engagement.
  • Driver inattention is a critical safety concern in semi-automated driving environments.

Purpose of the Study:

  • To evaluate driver adaptation to active safety warning signals in Level 2 automated vehicles.
  • To determine if drivers modify their behavior in response to inattention prompts.

Main Methods:

  • Utilized a proprietary driver inattention warning system in experimental Level 2 vehicles.
  • Collected driving performance data from sixteen participants over an extended period.
  • Analyzed the frequency of inattention prompts received by drivers over time.

Main Results:

  • The average frequency of inattention prompts decreased significantly from 29.9 to 18.1 prompts per 10 minutes.
  • Prompt frequency reduction plateaued after approximately two hours of driving.
  • Fewer prompts indicate reduced instances of prolonged driver inattention.

Conclusions:

  • Drivers adapt their behavior to avoid triggering inattention alerts during automated driving.
  • Active safety warning systems show potential for enhancing driver attention and safety in automated vehicles.