公路交通工程设施基本信息量分析方法

为了定量分析公路交通工程设施的效能,为交通工程设施设计和设置更加合理提供理论依据,为道路交通管理部门、交通法规与标准制定部门提供有益的借鉴和参考,本文以定量论证为主,定性分析为辅,在分析国内外相关研究成果的基础上,提出了公路交通工程设施传递信息量、互信息量、信息熵等概念,并根据交通工程设施基本构成要素,从八类信息(中文、英文、阿拉伯数字、几何形状、颜色、指向、图及特征符号及线形设施等)的角度构建了公路交通工程设施基本信息量(未区分不同类信息的权重)计算模型,为分析单位公路空间驾驶人所获得的理论信息量,提出了公路交通工程设施传递信息密度概念,并对所构建的模型进行了实例分析.本文的研究内容对提高公路交通系统服务能力、运行效率和安全水平具有一定的理论意义和实用价值.

Analysis Methods of Basic Information Quantity of Traffic Engineering Facilities

The aims of this research are to quantitatively analyze the performance of road traffic engineering fa- cilities, to provide theoretical basis for rational design and installation of highway traffic engineering facilities, and to offer useful reference for the traffic administrative department, traffic laws and standards makers. On the basis of the analysis of the correlative researches, this paper puts forward the concepts of highway traffic engi- neering facilities, namely transferring information quantity, mutual information and entropy of information by quantitative and qualitative analysis. The calculation model of the basic information quantity of traffic engineer- ing facilities is built from eight types of information according to the basic elements of traffic engineering facili- ties. This paper also raises the concept of information density for analyzing the theoretical information quantity which can be obtained by drivers in unit road space. The research results have an important theoretical and practical value on improving the service capability, driving efficiency and safety level of highway traffic system.