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EFFECTIVENESS OF A HEADS-UP ADAPTIVE LANE DEVIATION WARNING SYSTEM FOR MIDDLE-AGED & OLDER ADULTS
Nazan Aksan1, Lauren Sager1, Benjamin Lester1
1University of Iowa & University of Nebraska Medical Center Iowa City, IA, USA.
Summary
Adaptive Lane Deviation Warning (LDW) systems improve driver reaction times. While effective for both age groups, older drivers showed slower responses with warnings active compared to younger drivers.
Area of Science:
- Human-Computer Interaction
- Automotive Safety Systems
- Cognitive Psychology
Background:
- Lane deviation is a common cause of vehicle accidents.
- Driver age can influence reaction times and performance in safety-critical tasks.
- Lane Deviation Warning (LDW) systems aim to mitigate risks associated with unintended lane departures.
Purpose of the Study:
- To evaluate the effectiveness of an Adaptive Lane Deviation Warning (LDW) system.
- To compare the performance of younger and older drivers using the LDW system.
- To identify factors influencing the benefits of LDW systems.
Main Methods:
- 46 participants (24 younger, 22 older) completed simulated drives with and without LDW.
- Reaction times for lane deviation corrections were measured.
- Cognitive functions, including processing speed, were assessed.
Main Results:
- LDW significantly reduced reaction times for lane deviation corrections in both younger (1.6s) and older (1.2s) drivers.
- Older drivers exhibited slower correction reaction times than younger drivers when LDW was active.
- Cognitive processing speed was a strong predictor of LDW benefits.
Conclusions:
- Adaptive LDW systems enhance driving safety by reducing reaction times.
- Older drivers may benefit from LDW but show age-related differences in performance with active warnings.
- Cognitive processing speed is a key factor in maximizing the advantages of LDW technology.

