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This study assessed older drivers’ driving behavior when using longitudinal and lateral vehicle warning systems together.

Advanced driver assistance systems (ADAS) can benefit drivers of all ages. Previous research with younger to middle-aged samples suggests that safety benefits are not necessarily additive with additional ADAS. Increases in following distance associated with the use of forward collision warning (FCW) decreased when drivers also used lane departure warning (LDW), likely due to attending to the LDW more than the FCW.

The current study used a driving simulator to provide 128 older drivers experience with FCW and/or LDW system(s) during a ~25-min drive to gauge their usage’s effects on driving performance and subjective workload.

There were no significant differences found in headway distance between older drivers who used different combinations of …