针对粤港澳大湾区城际铁路采用公交化运营模式后，存在功能层次不清晰、与城市发展不协调、网络化 运营不足、服务效率不高等问题，基于相关国内外都市圈区域轨道交通发展经验，提出将城际铁路、市域快线等 轨道线路按照功能层次重新整合，结合都市圈出行需求特征统筹考虑网络布局，优化都市圈外部廊道，强化核心 区快速直连通道，利用车站配线及联络线进一步加强都市圈轨道交通的互联互通，优化城际车站与地铁换乘服务 等相关建议，为区域内城际铁路的运营服务水平提升及可持续发展提供参考。

Intercity railways in the Guangdong-Hong Kong-Macao Greater Bay Area (GBA) face operational challenges when used for public transit. These challenges include unclear functional specialization, misalignment with urban development plans, and insufficient network operation, leading to low service efficiency. This study proposes a reorganization strategy informed by successful regional rail transit practices globally. The strategy focuses on three key areas: (1) Reorganizing intercity railways, urban express lines, and other rail lines based on distinct functional levels for optimized service allocation. (2) Optimizing the network layout based on urban travel demand characteristics. This includes optimizing external corridors, strengthening fast and direct connections within the core area, and further strengthening urban rail interconnection through station wiring and connecting lines. (3) Optimizing intercity station and transfer services to improve passenger experience. Implementing these strategies is expected to provide valuable insights for improving operational service levels and promoting the sustainable development of intercity railways in the GBA.

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