一种区域交通状态定量分析方法

从模型参数、建模、定量方法和实际验证四方面研究了区域交通状态定量分析方法。采用路段交通状态系数作为路网交通状态参数,用交通状态连通矩阵表示路网空间信息、交通状态信息、交通状态判别信息,进而得到状态可达矩阵。在此基础上,利用分层算法得到了交通状态分层模型。对分层模型中路口和路段进行赋值,得到路口可达值、标准路段连通度等路网交通状态定量分析结果。对实际路网交通状态进行了定量分析,结果表明,能够得到路网交通状态定量分析结果及其演变过程。说明该方法是可行的,可以用于实际交通状态分析、区域交通控制、交通诱导、交通拥挤发生规律和交通拥挤演化的研究中。

Quantitative approach for regional traffic state analysis

A quantitative approach for the regional traffic state analysis was developed by identifying the model parameters, the spatiotemporal hierarchical modelling, the quantitative method, and the case validation. The link traffic state coefficient was taken as the road network traffic state model parameter. The spatial information of road netwrok, the temporal traffic state information, and the traffic state judgement information were contained in the traffic state connection matrix, from which the reachable traffic state matrix can be calculated. Based on this a hierarchical model was deduced using the hierarchical algorithm. Giving the evaluated numerical values to the intersections and links in the hierarchical model, the quantitative results such as the intersection reachable value and the standard link connectable degree were calculated. The data in the real road network in Beijing were used to test the approach and the results show that the developed hierarchical model can be used to analyze quantitatively the traffic state of the intersection and its evolution, demonstrating the developed regional traffic state quantitative approach is feasible, which can be spreaded to perform the analysis of real traffic state, the control of regional traffic, the traffic induction, the research of traffic congestion and its evolution.