CAJ | 학술논문

GIS-T路网数据模型是实现ITS应用的前提和基础，以道路要素作为表达、存储和组织路网数据的基本单位，考虑不同尺度下的应用需求，提出了基于道路要素的多尺度路网数据模型，同时建立了道路拓扑关系与车道拓扑关系。模型在不同尺度下分为三个层次，第一层沿用传统路网结构，以结点描述平面交叉口与立体交叉口；第二层描述路网中所有的线形地物，建立道路之间的拓扑关系，包括立交中主线或匝道间的拓扑关系；第三层把车道作为要素，建立车道之间的拓扑关系，描述车道之间的交通组织情况。不同层次的要素之间建立了实体对应关系。
GIS-T로망수거모형시실현ITS응용적전제화기출，이도로요소작위표체、존저화조직로망수거적기본단위，고필불동척도하적응용수구，제출료기우도로요소적다척도로망수거모형，동시건립료도로탁복관계여차도탁복관계。모형재불동척도하분위삼개층차，제일층연용전통로망결구，이결점묘술평면교차구여입체교차구；제이층묘술로망중소유적선형지물，건립도로지간적탁복관계，포괄입교중주선혹잡도간적탁복관계；제삼층파차도작위요소，건립차도지간적탁복관계，묘술차도지간적교통조직정황。불동층차적요소지간건립료실체대응관계。
GIS-T Data Model is the base of the applications of ITS.Road feature is the basic unit to express,store and organize road networks.Comprehending the different user requirement at different representation scales,the feature-based multi-level data model for road network is proposed.The data model consists of three levels.The level -1 expresses the topology structure of road network.The level -2 describes all the linear features in road network,and establishes the topological relationship between roads.The level-3 takes a lane as a feature,establishes the topological relations between lanes,to describe the traffic regulation in intersections and in lanes.Corresponding relations between features of different levels are established.The experiments prove that the proposed model is feasible and effective.