Driver Visual Attention Before and After Take-Over Requests During Automated Driving on Public Roads
Journal article, 2024

Objective
This study aims to understand drivers’ visual attention before and after take-over requests during automated driving (AD), when the vehicle is fully responsible for the driving task on public roads.
Background
Existing research on transitions of control from AD to manual driving has mainly focused on take-over times. Despite its relevance for vehicle safety, drivers’ visual attention has received little consideration.
Method
Thirty participants took part in a Wizard of Oz study on public roads. Drivers’ visual attention was analyzed before and after four take-over requests. Visual attention during manual driving was also recorded to serve as a baseline for comparison.
Results
During AD, the participants showed reduced visual attention to the forward road and increased duration of single off-road glances compared to manual driving. In response to take-over requests, the participants looked away from the forward road toward the instrument cluster. Levels of visual attention towards the forward road did not return to the levels observed during manual driving until after 15 s had passed.
Conclusion
During AD, drivers may look toward non-driving related task items (e.g., mobile phone) instead of forward. Further, when a transition of control is required, drivers may take over control before they are aware of the driving environment or potential threat(s). Thus, it cannot be assumed that drivers are ready to respond to events shortly after the take-over request.
Application
It is important to consider the effect of the design of take-over requests on drivers’ visual attention alongside take-over times.

human-automation interaction

take-over request

automated driving

vehicle automation

visual attention

driver behavior

Author

Linda Pipkorn

Chalmers, Mechanics and Maritime Sciences (M2), Vehicle Safety

Emma Tivesten

Chalmers, Mechanics and Maritime Sciences (M2), Vehicle Safety

Marco Dozza

Chalmers, Mechanics and Maritime Sciences (M2), Vehicle Safety

Human Factors

0018-7208 (ISSN) 1547-8181 (eISSN)

Vol. 66 2 336-347

L3Pilot - Piloting Automated Driving on European Roads

European Commission (EC) (EC/H2020/723051), 2017-09-13 -- 2020-09-13.

Addressing challenges toward the deployment of higher automation (Hi-Drive)

European Commission (EC) (EC/H2020/101006664), 2021-07-01 -- 2025-06-30.

Subject Categories

Other Mechanical Engineering

Robotics

Areas of Advance

Transport

DOI

10.1177/00187208221093863

PubMed

35708240

More information

Latest update

3/7/2024 9