高速跟车状态下驾驶人最低视觉注意力需求  

Driver's Minimum Required Visual Attention in High Speed Car-following

作　　者：刘卓凡[1] 付锐[1,2] 马勇 袁伟[1,2] 程文冬[1,3] LIU Zhuo-fan;FU Rui;MA Yong;YUAN Wei;CHENG Wen-dong(School o{ Automobile, Chang＇an University, Xi＇an 710064, Shaanxi, China;Key Laboratory of Automotive Transportation Safety Technology, Ministry of Transport, Chang＇an University, Xi＇an 710064, Shaanxi, China;School of Mechatronic Engineering, Xi＇an Technological University, Xi＇an 710032, Shaanxi, China)

机构地区：[1]长安大学汽车学院,陕西西安710064 [2]长安大学汽车运输安全保障技术交通行业重点实验室,陕西西安710064 [3]西安工业大学机电工程学院,陕西西安710032

出　　处：《中国公路学报》2018年第4期28-35,共8页China Journal of Highway and Transport

基　　金：国家自然科学基金项目(61473046);教育部创新团队发展计划项目(IRT_17R95);中央高校基本科研业务费专项资金项目(310822161006);陕西省教育厅专项科研计划项目(16JK1375)

摘　　要：为了避免现有驾驶分心研究方法的局限性,从注意力需求角度入手,探索了高速跟车过程中驾驶人安全驾驶所需的最低视觉注意力。在驾驶模拟器上进行试验,记录26名驾驶人在正常驾驶和视线遮挡驾驶2种状态下的视觉行为和视线遮挡行为数据,并进行统计分析。考虑驾驶人个体差异,初步探索了最低视觉注意力需求分布。结果表明:高速跟车驾驶状态下,驾驶人可以不需观察周围交通信息安全行驶35m左右,视线遮挡距离与车速无关,可用于表征注意力需求。视线遮挡距离和遮挡频率存在个体差异,但驾驶人总体遮挡百分比基本不变。高速跟车过程中驾驶人的剩余注意力主要用于观察道路前方和其他区域。具体表现为视线遮挡驾驶状态下驾驶人对道路前方和其他区域的观察距离显著缩短,而观察频率基本不变,且仅需行驶25m左右的时间驾驶人即可完成观察周围交通状况,说明观察频率对获取交通信息更为重要。驾驶人平均每行驶20~60m(1.0~2.8s)需要观察前方道路一次,每行驶80~220m(4.1~8.6s)需要观察车速表一次,每行驶140~300m(6.7~13.5s)需要观察后视镜一次,每50~200m(2.5~9.1s)可以遮挡视线一次,但遮挡距离一般小于43.7m(约2.4s)。研究结果有助于提高分心预警系统的环境敏感性和车内人机界面设计的合理性。To avoid the limitations of current research methods for driving distraction, we explored the minimum required visual attention for safe driving under car-following condition on highway from the perspective of attention demand. An experiment was carried out on a driving simulator to record the visual behavior and vision occlusion data of 26 drivers under both normal and occluded driving conditions. An analysis of occlusion behavior and the difference of the visual behavior under the two driving conditions were conducted. The results show that safe driving can be achieved at about 35 m without sampling traffic information under car-following conditions on highway. The occlusion distance was independent of speed and can be used as an indicator of attention demand. Although there were individual differences in occlusion distance and occlusion frequencies, the drivers＇ overall occlusion percentage remained relatively stable. In combination with the results of visual behavior analysis, the drivers＇ spare capacity under car-following conditions on highway was mainly used to observe the forward road and other areas. Specifically, the drivers＇ glance distance to forward road and other areas were significantly shorter under conditions of vision occlusion, whereas the glance frequency did not change significantly. In addition, the drivers could sample sufficient information within only about 25m, which indicates that the glance frequency is more important for information sampling. In consideration of individual differences, the distribution of the minimum required visual attention was primarily explored. In addition, the pattern was set based on the results： the forward road, speedometer, and mirror need to be observed within at least less than 20-60 m （1.0-2.8 s）, 80-220 m （4.1-8.6 s）, and 140-300 m （6.7-13.5 s）, respectively. In addition, the drivers could have a chance to occlude themselves every 50-200 m （2.5-9.1 s） ; however, the occlusion distance should be less than 43. 7 m （2. 4 s）. The

关 键 词：交通工程 驾驶分心 模拟驾驶试验 驾驶人注意力 视线遮挡 视觉行为 

分 类 号：U491.254[交通运输工程—交通运输规划与管理]