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指路标志是交通标志设计的核心内容。尝试从系统的角度对指路标志的实际效果进行评价,进以指导指路标志系统的构造。为此,提出由可判决性、优化度和稳定性三个指标构成的指路标志系统评价体系,分析了可用于指路标志系统的指路信息的类型,以及指路信息和道路使用者所具备的知识的不同组合,定义了指路标志系统的类型,并分别分析了各类指路标志系统在可判决性、优化度和稳定性方面的区别。结合实际的指路标志系统必须满足的信息量限制条件,得出了具备广泛适应性和最优的稳定性的指路标志系统类型,提出了指路标志系统的一般构造原则。
Road sign is the core of traffic sign design. Try to evaluate the actual effect of the road marking from a systematic point of view and guide the construction of the road marking system. For this reason, the evaluation system of road marking system is proposed, which consists of three indicators: judgability, optimization degree and stability. The paper analyzes the types of road information that can be used in road marking system, as well as road information and road users The different combinations of knowledge provided define the types of the road marking system and analyze the differences in the judgability, optimization and stability of the various road marking systems. According to the limited amount of information that the system must meet, the type of the road marking system with a wide range of adaptability and optimal stability is obtained. The general construction principle of the road marking system is proposed.