Effects of using head-up display in automobile context on attention demand and driving performance

Speaker: Jenny 2008/10/1

Introduction Head-up / Head-down display Need to shift attention Time-saving: re-accommodation Increasing workload Shrink effect (S,N. Roscoe, 1987)

Cognitive capture effect: result from inefficient attention (R.S. McCann, et al.)

attention location and the sequence of attention shift

Differences in drivers’ performance between their attention to the HUD and focus on the road

Differences in performance due to the drivers’ attention switch from the HUD to the road

Method

48 subjects into 4 groups 2(driving load, between-subjects) *2(attention

location, within-subject) *2(sequence of attention location, between subjects)

Attention-on-HUD 1st to avoid novelty effect speed limit sign(5s), number(2s),

letter A(20s), read diamond(2s)

Driving Loads

Conclusion During attention-to-HUD, drivers’

enhanced awareness lead better performance

HUD may increase the mental load Best performance: attention shifted to HUD Worst: attention shift from HUD to road

Salient effect Novelty effect: previous training and adaption Drivers’ attention is limited to the road’s right

side, thus it can’t fully simulate real conditions.

The ENDThank you!