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Related Experiment Video

Updated: Jun 29, 2026

Driving Simulation in the Clinic: Testing Visual Exploratory Behavior in Daily Life Activities in Patients with Visual Field Defects

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Published on: September 18, 2012

Aging: Older Adults' Driving Behavior Using Longitudinal and Lateral Warning Systems.

Dustin J Souders¹, Neil Charness², Nelson A Roque³

¹311308 Purdue University, West Lafayette, Indiana, USA.

|July 31, 2019

Summary

Older drivers using forward collision warning (FCW) systems showed improved time-to-collision (TTC). Unlike younger drivers, older adults experienced no adverse effects on driving performance or workload when using FCW and lane departure warning (LDW) systems concurrently.

Keywords:

advanced driver assistance systems forward collision warning lane departure warning older adults

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Published on: December 18, 2020

Area of Science:

Gerontology
Human Factors Engineering
Traffic Safety

Background:

Advanced driver assistance systems (ADAS) offer benefits across age groups.
Previous studies with younger drivers indicated that safety benefits of multiple ADAS may not be additive.
Concurrent use of forward collision warning (FCW) and lane departure warning (LDW) in younger samples led to decreased following distance.

Purpose of the Study:

To assess older drivers' driving behavior with combined longitudinal and lateral vehicle warning systems.
To evaluate the impact of using forward collision warning (FCW) and/or lane departure warning (LDW) on driving performance and subjective workload in older adults.

Main Methods:

A driving simulator study involving 128 older drivers.
Participants experienced forward collision warning (FCW) and/or lane departure warning (LDW) systems during a ~25-minute simulated drive.
Driving performance metrics (headway distance, time-to-collision, standard deviation of lane position) and subjective workload were measured.

Main Results:

No significant differences in headway distance were observed across different FCW/LDW system combinations.
Older drivers using FCW systems demonstrated significantly longer time-to-collision (TTC) when approaching critical events.
Lane departure warning (LDW) system use did not reduce the standard deviation of lane position; subjective workload remained unchanged.

Conclusions:

Forward collision warning (FCW) systems may enhance older drivers' time-to-collision (TTC) during driving.
Contrary to findings in younger populations, concurrent use of FCW and LDW did not negatively impact older drivers' longitudinal driving performance or subjective workload.
These findings suggest that older drivers can effectively utilize combined FCW and LDW systems without compromising driving performance or increasing cognitive load.