对成都市三环线——绕城高速西北区域当前公交路线设置的合理性和科学性进行评价,并在分别考虑人口密度、交通路况、公交公司运营成本、居民出行方便、地铁换乘、未来该区域发展的条件下,提出相应的数学模型并求解,重新对该区域的公交线路进行合理的规划设计。 This paper evaluates the rationality and scientificity of the current bus route setting in the northwestern region of Ring Expressway in the Third Ring Road of Chengdu City and takes into consideration of population density, traffic conditions, bus company operating costs, residents’ travel convenience and subway transfer. Under the conditions of regional development, the corresponding mathematical model is proposed and solved, and the rational planning and design of the bus lines in the region are resumed.