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Related Experiment Videos

Comparing drivers' visual attention at Junctions in Real and Simulated Environments.

Chloe J Robbins1, Harriet A Allen1, Peter Chapman1

  • 1School of Psychology, University of Nottingham, Nottingham, NG7 2RD, United Kingdom.

Applied Ergonomics
|July 9, 2019
PubMed
Summary

This study compared driver visual attention in a high-fidelity driving simulator versus on the road. While broad search strategies were similar, eye movement details differed, suggesting simulators are useful for moderate-demand driving research.

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Area of Science:

  • Human-Computer Interaction
  • Transportation Psychology
  • Automotive Engineering

Background:

  • Driving simulation is a valuable tool for applied research, but requires behavioral validation for specific tasks.
  • Previous validation studies often used simplified tasks and measured basic vehicle control.
  • Crossing intersections involves complex visual attention and head/eye movements potentially not captured accurately in simulators.

Purpose of the Study:

  • To investigate the similarity of driver visual attention at intersections of varying demand in a simulator versus on the road.
  • To compare head and eye movement patterns during intersection navigation in simulated and real-world driving conditions.
  • To assess the validity of high-fidelity driving simulators for studying complex driving behaviors.

Main Methods:

Keywords:
DemandEye movementsJunctionsSimulator validity

Related Experiment Videos

  • Direct comparison of participant behavior in a high-fidelity driving simulator and a real car on actual roads.
  • Utilized naturalistic intersections in Nottingham, recreated in the simulator with matched traffic conditions.
  • Compared visual attention measures (head movements, eye movements, fixation durations, saccadic amplitudes) during low and medium demand intersection crossings (straight, left, right turns).

Main Results:

  • Head movement frequency and size were not significantly different between simulator and real-world driving.
  • Drivers' broad search strategies in the simulator appear representative of real-world driving.
  • Task demand significantly impacted behavior: medium demand led to longer crossing times, more head movements, shorter fixations, and larger saccades compared to low demand.
  • Fine-grained eye movement measures, specifically mean fixation duration, were longer in the simulator than on-road, particularly in low-demand situations.

Conclusions:

  • High-fidelity driving simulators can effectively represent drivers' broad visual search strategies at intersections.
  • Simulators are valuable tools for driving research, especially for tasks of moderate to high cognitive demand.
  • Differences in fine-grained eye movements (fixation duration) suggest reduced visual engagement in simulators under low-demand conditions, highlighting the importance of task complexity in validation.