许昌市中心城区公交线网评价及优化策略

Evaluation and Optimization Strategy of Public Transportation Network in Downtown Xuchang

基于许昌市中心城区实际情况及现有数据,从公交线路设置、公交线网分布、公交线网可达性、公交运营服务这4个维度,确定8个具体评价指标以建立公交线网评价指标体系,并通过层次分析法计算得到各项指标的权重值.综合分析可得到许昌市中心城区公交线网整体得分为77.通过对这8个评价指标的计算和分析可知,许昌市中心城区公交线路非直线系数普遍偏高,公交线路网密度、500 m公交站点覆盖率偏低;万人公交车拥有量、公交线路重复系数、公交线路平均站距、公交专用道比例、线路长度较为合理.针对评价结果得出许昌市公交线路绕行过多,服务覆盖面积不足等问题,提出线网优化建议,为之后公交线网调整提供参考.

In recent years,with the acceleration of motorization,how to attract citizens to choose public transport has become an increasingly important issue.Based on the actual situation and existing data of the downtown Xuchang,this paper determines eight specific evaluation indicators from the four dimensions,namely bus line setting,bus line network distribution,bus line network accessibility and bus operation service,to establish the evaluation index system of a bus line network,and calculates the weight value of each indicator through an analytic hierarchy process.Comprehensive analysis shows that the overall score of the public transportation network in the downtown Xuchang is 77.Through the calculation and analysis of these eight evaluation indicators,it can be seen that the non-linear coefficient of bus lines in the downtown Xuchang is generally high,and the density of bus line network and the coverage of 500 m bus stops are low.The number of buses per 10000 population,the repetition coefficient of bus lines,the average station distance of bus lines,the proportion of bus lanes,and the length of lines are relatively reasonable.According to the evaluation results,it is concluded that there are too many detours and insufficient service coverage of public transport lines in the City of Xuchang,and some recommendations on network optimization are put forward to provide reference for the future adjustment of public transport network.