Research on the Occupant Discomfort due to Safety Perception in Overtaking Scenarios

2022-01-7089

12/22/2022

Features
Event
SAE 2022 Intelligent and Connected Vehicles Symposium
Authors Abstract
Content
With the widespread application of autonomous driving technology, occupant comfort has become a key topic. Occupant comfort of autonomous vehicles depends on the driving system’s performance, so studying the causes of occupant discomfort will help design driving systems. In addition to the discomfort in NVH and thermal comfort, occupant comfort is also affected by other factors such as safety perception. To study the impact of safety perception on comfort, this paper designed a road experiment and focused on the overtaking scenarios. Because the interaction between the ego vehicle and others is strong during overtaking, the occupants are more likely to receive visual stimuli, resulting in discomfort caused by safety perception. In the experiment, occupant discomfort scores were collected in real-time by the tool developed in this paper. Meanwhile, the kinematics data and video were collected and used to calculate eight indexes related to safety perception: the ego vehicle speed, the relative speed with the front vehicle, TTC, the position of adjacent background vehicles, longitudinal distance from the front vehicle, the model of the vehicle in front, the ego vehicle acceleration, and the overtaking time. After correlation analysis, it can be found that at a significant level of 0.05, the first four indexes are closely related to the discomfort score. Then, the first four indexes were used as independent variables, and the discomfort score was used as a dependent variable to be substituted into the multiple linear regression model to analyze different effects on comfort. The results show that choosing to overtake when a vehicle is in the target lane will increase the discomfort by 28.1%, compared with the scenario where no vehicle is around the vehicle. In addition, if the vehicle’s speed increases by 1m/s or the TTC decreases by 1s, the occupant discomfort will increase by 0.02 and 0.018.
Meta TagsDetails
DOI
https://doi.org/10.4271/2022-01-7089
Pages
9
Citation
Xingyu, Z., Xiao, W., Zhou, T., and Meng, H., "Research on the Occupant Discomfort due to Safety Perception in Overtaking Scenarios," SAE Technical Paper 2022-01-7089, 2022, https://doi.org/10.4271/2022-01-7089.
Additional Details
Publisher
Published
Dec 22, 2022
Product Code
2022-01-7089
Content Type
Technical Paper
Language
English