Related Experiment Videos
Cognitive demands of collision avoidance in simulated ship control
G Robert J Hockey1, Alex Healey, Martin Crawshaw
1School of Psychology, University of Leeds, Leeds, UK. g.r.j.hockey@leeds.ac.uk
Human Factors
|October 8, 2003
Summary
This study on maritime collision avoidance found that increasing collision threats significantly raise operator cognitive demands. Decision aid use, workload, and performance were affected, especially during emergency scenarios involving rule violations.
Area of Science:
- Maritime Safety
- Human Factors in Navigation
- Cognitive Psychology
Background:
- Collision avoidance is critical in maritime operations.
- Operator cognitive load impacts navigation safety.
- Existing collision avoidance systems may not fully address complex scenarios.
Purpose of the Study:
- To investigate the cognitive demands placed on operators during maritime collision avoidance.
- To evaluate the effectiveness of decision aids under varying collision threat levels.
- To inform the design of future collision avoidance systems.
Main Methods:
- Utilized a PC-based radar simulator for 100 six-minute trials.
- Manipulated collision threat and traffic density across trials.
- Assessed operator responses including corrective maneuvers and decision aid usage.
Main Results:
- Collision threat significantly impacted decision aid use, subjective workload, and secondary task performance.
- Cognitive demand increased substantially during emergency trials caused by rule violations.
- Uncertainty regarding other vessels' intentions heightened monitoring needs and delayed corrective actions.
Conclusions:
- Cognitive demands in collision avoidance are sensitive to the predictability of threats.
- Ecological displays may enhance collision avoidance by managing operator cognitive load.
- Findings support the development of adaptive collision avoidance systems.