Abstract: Through the study on different vehicles' following alignment , this paper gains the mathematical model on carrying capacity under different vehicles' proportion.Based on the study of flow-speed-density relationships, we gain the ideal carrying capacity and the influence to speed caused by the mixing-rate of mixed traffic flow in addition.There arent any linear relationships among different vehicles as to the occupancy of lanespace.

Key words: high-class highway, mixed traffic flow, carrying capacity

摘要： 探讨混合车流条件下高等级公路的通过能力．通过对不同前后跟车序列的研究，得到了不同车型比例下通过能力的解析式；在三大参数模拟的基础上，得到了理想通过能力．同时得到了混合车流条件下混合率对速度的影响以及大小车在占用道路空间上并不存在线性关系的结论．最后讨论了在混合车流条件下其它因素对通过能力的影响． 更多还原

关键词: 高等级公路, 混合车流, 通过能力