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False Alarm Effects in Early Warnings for Emergency Vehicles: Exploring Drivers' Move-Over Behavior.
Kajsa Weibull1,2, Björn Lidestam1, Erik Prytz2,3
1Swedish National Road and Transport Research Institute, Linköping, Sweden.
Human Factors
|November 29, 2023
Summary
Emergency Vehicle Approaching (EVA) warnings improve driver move-over behavior, but false alarms can reduce compliance. Driver experience and warning type did not significantly impact this behavior.
Area of Science:
- Road safety research
- Human-computer interaction
- Traffic psychology
Background:
- Emergency Vehicle Approaching (EVA) warnings aim to improve driver response to emergency vehicles.
- Potential risks include false alarms due to predicted paths and varying driver experience levels.
Purpose of the Study:
- To investigate the impact of EVA warnings on driver move-over behavior.
- To explore the effects of false alarms, driver experience, and warning modality on this behavior.
Main Methods:
- A driving simulator study with 110 participants (54 inexperienced, 56 experienced).
- Participants encountered an emergency vehicle with true, false, auditory, or visual EVA warnings, or no warning (control).
Main Results:
- Drivers receiving EVA warnings moved over faster than the control group.
- False alarms significantly impaired subsequent move-over behavior.
- No significant differences were found based on driver experience or warning modality.
Conclusions:
- EVA warnings are effective in enhancing move-over behavior.
- False alarms negatively influence driver compliance with EVA warnings.
- Findings can inform the design of future EVA systems and understanding of in-car warning systems.
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