Effects of Automation Trust and Distracting Video Entertainment on Drivers’ Mental workload

With ongoing improvements in vehicle automation, research on automation trust has attracted considerable attention. We designed a three-factor 2 (trust type: trust, distrust) × 2 (video entertainment: variety-show videos, news videos) × 3 (measurement stage: 1–3) experiment. 48 drivers were recruited in Dalian, China, for the experiment. With a driving simulator, we used detection-response tasks (DRT) to measure each driver’s performance. Their eye movements were recorded, and automation-trust scale was used to divide participants into trusting and distrusting groups. The whole experiment lasted 30 minutes and was divided into 3 stages. Drivers in the trusting group had lower mental workload and paid more attention to variety-show videos. The findings of the present study indicate that automation trust not only influence drivers’ mental work load but also accelerate distraction.

随着车辆自动化技术的持续进步，自动化信任（automation trust）相关研究已受到广泛关注。本研究设计了一项三因素实验，采用2（信任类型：信任、不信任）×2（视频娱乐类型：综艺视频、新闻视频）×3（测量阶段：1-3）的实验范式。研究在中国大连招募了48名驾驶员参与实验：实验依托驾驶模拟器（driving simulator），通过检测反应任务（Detection-Response Task，DRT）采集驾驶员的操作绩效数据，同时记录其眼动轨迹，并借助自动化信任量表（automation-trust scale）将被试划分为信任组与不信任组。整个实验时长为30分钟，分为3个阶段。数据分析结果显示，信任组驾驶员的心理工作负荷更低，且对综艺视频的关注度更高。本研究结果表明，自动化信任不仅会影响驾驶员的心理工作负荷，还会加剧驾驶分心行为。