基于视觉特性的可变情报板文字信息阈值研究  

Research on Text Information Threshold of Variable Message Sign Based on Visual Characteristics

作　　者：伍毅平 李思宇 沈兴华 彭志彪 徐昶 冯宗敏 WU Yiping;LI Siyu;SHEN Xinghua;PENG Zhibiao;XU Chang;FENG Zongmin(College of Metropolitan Transportation, Beijing University of Technology, Beijing 100124, China;Beijing Highway Monitoring Center, Beijing 100053, China;Beijing Municipal Institute of City Planning & Design, Beijing 100045, China)

机构地区：[1]北京工业大学城市交通学院,北京100124 [2]北京市道路路网管理与应急处置中心,北京100053 [3]北京市城市规划设计研究院,北京100045

出　　处：《武汉理工大学学报（交通科学与工程版）》2022年第1期17-21,共5页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：北京市教委科技项目(KM201910005002);北京市交通委员会科技项目(201814-ZHLZ2)。

摘　　要：可变情报板(VMS)是传递实时道路交通信息的重要载体,但仍存在版面文字信息量过载导致视认性偏低等问题.文中选取长条形VMS作为研究对象,利用静态认知实验获取42名驾驶人在8,12,16,20,24五种文字信息量下的视认时间及理解错误率,基于描述分析和统计检验逐步明确文字信息量对驾驶人视觉特性的影响,初步确定信息量阈值,并通过动态驾驶模拟实验验证静态认知实验结果.研究结果表明:长条形VMS文字信息量对驾驶人视认时间和理解错误率均造成显著影响,文字数量超过20字后驾驶人视认特性明显变差.Variable Message Board(VMS)is an important carrier to transmit real-time road traffic information,but there are still some problems such as low visibility caused by the overload of text information on the page.In this paper,the long VMS was selected as the research object,and the visual recognition time and understanding error rate of 42 drivers under the five kinds of text information of 8,12,16,20,24 were obtained by static cognitive experiment.Based on descriptive analysis and statistical test,the influence of text information content on drivers’visual characteristics was gradually clarified,and the threshold of information content was preliminarily determined,and the static cognitive experimental results were verified by dynamic driving simulation experiments.The results show that the information content of VMS characters in long strip has a significant impact on the driver’s visual recognition time and understanding error rate.When the number of characters exceeds 20 characters,the driver’s visual recognition characteristics obviously deteriorate.

关 键 词：可变信息板 信息阈值 视觉特性 静态认知实验 驾驶模拟实验 

分 类 号：U461[机械工程—车辆工程]