中文摘要：

为了更好地实现对指路标志指引信息可达性的分析及评价,同时为后续指路标志的优化布设做好基础,本文首先回顾了路网拓扑结构下的指路标志指引信息的表述模型.接着应用先前的研究,对指路标志指引可达性进行分析,并根据现实情况与管理者的角度提出相关改进措施,在搜索路径中考虑是否存在连接性标识的情况下,构建了用于搜寻指路标志指引路径的可达性算法模型.最后以广州大学城路网为例,将上述模型应用于该路网中,对指路标志指引可达性进行分析评价.实例表明,本算法模型提高了评价结果与现状的契合度,该算法有效、可行.

英文摘要：

In order to better analyze and evaluate the guiding accessibility of guide sign system,and lay a foundation of deploying and optimizing guide signs.Firstly,the representation model for guiding information is discussed based on the road network topology.And the previous study on analysis and evaluation for guiding accessibility is applied to a certain area,and some improved methods are proposed from the current situation and management.Then,the analysis algorithm model for path-finding and guiding accessibility is constructed taking connection signs into consideration according to above-mentioned improved methods.At last,a case study is conducted：the analysis algorithm model is tested in Guangzhou Higher Education Mega Center,and evaluated the guiding accessibility of guide sign system.Application revealed that this analysis algorithm model fits better with the present status,and the algorithm model is feasible and effective.