文章编号：1672-5328（2008）01-0028-04

吕剑 王峰
（杭州市城市规划设计研究院，杭州 310012）

摘要：为了评价不同路网形态下的城市道路可达性和对出行者的出行方式选择的影响，通过引入绕行系数的概念，对不同路网密度和交通管理策略的案例研究，说明可达性的变化对交通方式选择的影响。提出了基于绕行系数的可达性分析的基本思路，研究结果表明：仅以出行距离作为交通方式选择的影响要素条件下，可达性的改善有利于非机动出行方式分担率提高，合理的城市路网密度和适当的交通管理策略有利于多种交通方式共同发展。

关键词：交通规划；道路交通；交通方式选择；可达性；绕行系数

中图分类号：U491.1⁺23

文献标识码：A

Accessibility Research based on the Diverted Routing Factor

Lv Jian and Wang Feng
(Hangzhou City Planning and Design Academy, Hangzhou 310012, China)

Abstract: To illustrate the relationship between accessibility and traffic mode split, various road network densities and traffic management strategies are analyzed using the introduced round factor. The process of accessibility analysis is also proposed. The analysis results show that better accessibility leads to lower costs for transportation users. Trip distance-based mode-choice modeling results in better accessibility which gives rise to higher percentage of non-motorized travel modes. Reasonable road density and appropriate traffic management strategies benefit both motorized and non-motorized traffic models.

Keywords: transportation planning; road traffic; travel mode split; accessibility; round factor