Takeover Quality: Assessing the Effects of Time Budget and Traffic Density with the Help of a Trajectory-Planning Method

Joint Authors

Doubek, Fabian
Loosveld, Erik
Happee, Riender
de Winter, Joost

Source

Journal of Advanced Transportation

Issue

Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-12, 12 p.

Publisher

Hindawi Publishing Corporation

Publication Date

2020-07-01

Country of Publication

Egypt

No. of Pages

12

Main Subjects

Civil Engineering

Abstract EN

In highly automated driving, the driver can engage in a nondriving task but sometimes has to take over control.

We argue that current takeover quality measures, such as the maximum longitudinal acceleration, are insufficient because they ignore the criticality of the scenario.

This paper proposes a novel method of quantifying how well the driver executed an automation-to-manual takeover by comparing human behaviour to optimised behaviour as computed using a trajectory planner.

A human-in-the-loop study was carried out in a high-fidelity 6-DOF driving simulator with 25 participants.

The takeover required a lane change to avoid roadworks on the ego-lane while taking other traffic into consideration.

Each participant encountered six different takeover scenarios, with a different time budget (5 s, 7 s, or 20 s) and traffic density level (low or medium).

Results showed that drivers exhibited a considerably higher longitudinal and lateral acceleration than the optimised behaviour, especially in the short time budget scenarios.

In scenarios of medium traffic density, the trajectory planner showed a moderate deceleration to let a vehicle in the left lane pass; many participants, on the other hand, did not decelerate before making a lane change, resulting in a dangerous emergency brake of the left-lane vehicle.

In conclusion, our results illustrate the value of assessing human takeover behaviour relative to optimised behaviour.

Using the trajectory planner, we showed that human drivers are unable to behave optimally in urgent scenarios and that, in some conditions, a medium deceleration, as opposed to a maximal or minimal deceleration, is optimal.

American Psychological Association (APA)

Doubek, Fabian& Loosveld, Erik& Happee, Riender& de Winter, Joost. 2020. Takeover Quality: Assessing the Effects of Time Budget and Traffic Density with the Help of a Trajectory-Planning Method. Journal of Advanced Transportation،Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1175842

Modern Language Association (MLA)

Doubek, Fabian…[et al.]. Takeover Quality: Assessing the Effects of Time Budget and Traffic Density with the Help of a Trajectory-Planning Method. Journal of Advanced Transportation No. 2020 (2020), pp.1-12.
https://search.emarefa.net/detail/BIM-1175842

American Medical Association (AMA)

Doubek, Fabian& Loosveld, Erik& Happee, Riender& de Winter, Joost. Takeover Quality: Assessing the Effects of Time Budget and Traffic Density with the Help of a Trajectory-Planning Method. Journal of Advanced Transportation. 2020. Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1175842

Data Type

Journal Articles

Language

English

Notes

Includes bibliographical references

Record ID

BIM-1175842