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从信息论和驾驶员视认心理角度,提出交通标志信息量的度量标准,通过实验的方法获得交通标志信息过载阈值;根据信息过载的属性,分为信息数量过载和信息质量过载,建立路段交通标志信息量过载阈值计算数学模型,计算出不同速度对应的路段交通标志信息量数量过载阈值及其建议阈值;以西安绕城高速公路的标志设计为实例,为设计、管理人员提供可参考的道路交通标志信息过载阈值建议值。
From the perspective of information theory and drivers’ psychological recognition, this paper proposes a metric of traffic sign information amount and obtains traffic sign information overload threshold through experiment. According to the attribute of information overload, it divides into information overload and information overload, and establishes road traffic sign Information overload threshold calculation mathematical model to calculate the different speeds corresponding to the amount of traffic signs on the road traffic overload threshold and its recommended threshold; Xi’an beltway highway logo design as an example, the design and management personnel can provide reference road traffic Flag Message Overload threshold Recommended value.