Remote Monitoring and Teleoperation of Autonomous Vehicles $-$ Is Virtual Reality an Option?

TL;DR

This study compares virtual reality and physical interfaces for remote monitoring and teleoperation of autonomous vehicles, revealing VR's current limitations and potential for future improvements.

Contribution

It provides a comprehensive evaluation of VR-based teleoperation versus physical systems through three user studies, highlighting VR's challenges and future prospects.

Findings

VR does not outperform physical interfaces in replication tasks

VR's perceptual and ergonomic issues outweigh its benefits currently

Newer VR headsets may improve VR's viability for teleoperation

Abstract

While the promise of autonomous vehicles has led to significant scientific and industrial progress, fully automated, SAE level 5 conform cars will likely not see mass adoption anytime soon. Instead, in many applications, human supervision, such as remote monitoring and teleoperation, will be required for the foreseeable future. While Virtual Reality (VR) has been proposed as one potential interface for teleoperation, its benefits and drawbacks over physical monitoring and teleoperation solutions have not been thoroughly investigated. To this end, we contribute three user studies, comparing and quantifying the performance of and subjective feedback for a VR-based system with an existing monitoring and teleoperation system, which is in industrial use today. Through these three user studies, we contribute to a better understanding of future virtual monitoring and teleoperation solutions for autonomous vehicles. The results of our first user study (n=16) indicate that a VR interface replicating the physical interface does not outperform the physical interface. It also quantifies the negative effects that combined monitoring and teleoperating tasks have on users irrespective of the interface being used. The results of the second user study (n=24) indicate that the perceptual and ergonomic issues caused by VR outweigh its benefits, like better concentration through isolation. The third follow-up user study (n=24) specifically targeted the perceptual and ergonomic issues of VR; the subjective feedback of this study indicates that newer-generation VR headsets have the potential to catch up with the current physical displays.