城市道路交通流的复杂度研究

Study on the Complexity of Traffic Flow on Urban Road

为了定量描述交通流系统的复杂度,本文在介绍统计复杂度及其性质的基础上,将其引入路段交通流的复杂度量化分析,并以南京3条典型路段上的交通流为样本,通过比较分析不同路段上的交通流复杂度与交通冲突率的关系,以期得出交通冲突率与路段交通流的复杂度的回归模型。结果表明:特征量复杂度能够有效测度系统的随机性和非线性,且交通流复杂度与非严重交通冲突率的相关性比较好,适于实测交通流的复杂性测度分析,可为研究交通系统的复杂度研究提供新的思路。

In order to quantitatively describe the complexity of traffic flow system, the paper analyzed the traffic flow complexity on road based on introducing the statistical complexity and its property. Taking the traffic flow on three typical road sections in Nanjing as a sample, and by comparing and analyzing the relation between the traffic flow complexity and traffic conflict rate on the different sections, the paper drew out a regression model of the traffic flow complexity and traffic conflict rate. The results showed that： the characteristic complexity is an effective measure for the random and non-linear systems, and the relevance between traffic flow complexity and non-serious traffic conflict rate is better enough for measuring and analyzing the traffic flow complexity, which supports a new idea on studying the complexity of transport system.