Gaze doesn’t always lead steering

Esko Lehtonen, Otto Lappi, Noora Koskiahde, Tuomas Anttoni Mansikka, Jarkko Lauri Ilari Hietamäki, Kari Heikki Ilmari Summala

Forskningsoutput: TidskriftsbidragArtikelPeer review

Sammanfattning

In car driving, gaze typically leads the steering when negotiating curves. The aim of the current study was to investigate whether drivers also use this gaze-leads-steering strategy when time-sharing between driving and a visual secondary task.

Fourteen participants drove an instrumented car along a motorway while performing a secondary task: looking at a specified visual target as long and as much as they felt it was safe to do so. They made six trips, and in each trip the target was at a different location relative to the road ahead. They were free to glance back at the road at any time. Gaze behaviour was measured with an eye tracker, and steering corrections were recorded from the vehicle’s CAN bus. Both in-car ‘Fixation’ targets and outside ‘Pursuit’ targets were used.

Drivers often used a gaze-leads-steering strategy, glancing at the road ahead 200–600 ms before executing steering corrections. However, when the targets were less eccentric (requiring a smaller change in glance direction relative to the road ahead), the reverse strategy, in which glances to the road ahead followed steering corrections with 0–400 ms latency, was clearly present. The observed use of strategies can be interpreted in terms of predictive processing: The gaze-leads-steering strategy is driven by the need to update the visual information and is therefore modulated by the quality/quantity of peripheral information. Implications for steering models are discussed.
Originalspråkengelska
TidskriftAccident Analysis and Prevention
Volym121
Sidor (från-till)268-278
Antal sidor11
ISSN0001-4575
DOI
StatusPublicerad - dec 2018
MoE-publikationstypA1 Tidskriftsartikel-refererad

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