为进一步协调好快速公交和轨道交通之间的关系，合理确定快速公交功能定位、发展规模以及网络布局至关重要。以武汉为例，从公共交通客流需求、城市空间布局与道路交通条件等方面展开研究，借鉴国内外快速公交发展模式的成功经验，确定武汉应选择“BRT与轨道交通互补、高效衔接”、共同作为骨干的公共交通发展模式。在此基础上，运用线网密度匡算法和客流需求量匡算法提出了武汉快速公交发展合理规模，在轨道交通网络规划的基础上，从点、线、面三方面入手进行分析，提出了跨区骨干、镇内联通及远城过渡三种线网层次的网络布局方案。

For coordinating the relation between Bus Rapid Transit (BRT) and rail transit further, it is important to define the functional localization, the scale and the network layout of BRT. A case study of Wuhan was conducted in terms of public transportation passenger flow demand, city space layout and road traffic conditions, etc. Using the experience of other domestic cities at home and abroad for reference, it was determined that the public transportation development mode of Wuhan would be "complementary and efficient connection of BRT and rail transit" as the mainstay. The reasonable scale of Wuhan BRT was put forward through the line density estimation method and the passenger demand estimation method. Based on the network planning of rail transit, the analysis was conducted from the aspects of spot, line and surface. Then the network layout scheme with three levels of network which were cross-district trunk line, connection in town, and transition to distant region was proposed.