CCCC Wenshan Highway Construction & Development Co., Ltd., Wenshan 663000, China.
The Key Laboratory of Road and Traffic Engineering, Ministry of Education, Tongji University, 4800 Cao'an Road, Jiading, Shanghai 201804, China.
Int J Environ Res Public Health. 2021 Dec 31;19(1):412. doi: 10.3390/ijerph19010412.
With the popularization and application of conditionally automated driving systems, takeover requirements are becoming more and more frequent, and the subsequent takeover safety problems have attracted attention. The present study used functional magnetic resonance imaging (fMRI) technology, combined with driving simulation experiments, to study in depth the effects of critical degree and monitor request (MR) 30 s in advance on drivers' visual behavior, takeover performance and brain activation. Results showed that MR can effectively improve the driver's visual and takeover performance, including visual reaction times, fixation frequency and duration, takeover time, and takeover mode. The length of the reserved safety distance can significantly affect the distribution of longitudinal acceleration. Critical or non-critical takeover has a significant impact on the change of pupil diameter and the standard deviation of lateral displacement. Five brain regions, including the middle occipital gyrus (MOG), fusiform gyrus (FG), middle temporal gyrus (MTG), precuneus and precentral, are activated under the stimulation of a critical takeover scenario, and are related to cognitive behaviors such as visual cognition, distance perception, memory search and movement association.
随着条件自动驾驶系统的普及和应用，接管需求变得越来越频繁，随后的接管安全问题引起了关注。本研究采用功能磁共振成像（fMRI）技术，结合驾驶模拟实验，深入研究了关键程度和提前 30 秒监控请求（MR）对驾驶员视觉行为、接管性能和大脑激活的影响。结果表明，MR 可以有效提高驾驶员的视觉和接管性能，包括视觉反应时间、注视频率和持续时间、接管时间和接管模式。预留安全距离的长度会显著影响纵向加速度的分布。关键或非关键接管对接管过程中瞳孔直径和横向位移标准差的变化有显著影响。在关键接管场景的刺激下，五个脑区（包括中枕叶（MOG）、梭状回（FG）、颞中回（MTG）、楔前叶和中央前回）被激活，与视觉认知、距离感知、记忆搜索和运动联想等认知行为有关。
