探索区域快速轨道交通的发展,说明在人口稠密、经济发达的大都市圈中,各城市之间公交化的便捷、快速、大运量、直达市中心或中心城镇的轨道交通能够较好地支持区域经济和社会发展。分析目前主要存在的问题,如区域快速轨道交通的技术标准不明确、与国家铁路、城市轨道交通之间的界限模糊。分析都市圈的交通需求,从国内外案例入手,结合珠江三角洲区域城际轨道交通建设规划,探讨区域轨道交通的功能定位、技术标准与系统选型。 Exploring the development of rapid rail transit in the region shows that in a densely populated and economically developed metropolitan area, rail transit between cities can be conveniently supported by rapid, large-capacity and direct transportation to the urban centers or central towns Regional economic and social development. Analyze the main existing problems, such as the unclear technical standards of regional rapid rail transit and the ambiguity between the national railway and urban rail transit. The paper analyzes the traffic demand of the metropolitan area, starts with the domestic and foreign cases, and combines with the planning of inter-city rail transit construction in the Pearl River Delta to explore the functional positioning, technical standards and system selection of the regional rail transit.