Urban Network Traffic State Evaluation Based on a Traffic State Coefficient

Abstract

Urban traffic network state is evaluated based on the traffic state evaluation of its component units (junctions and road sections). However, previous research viewed the intersection into road sections more from the meso perspective, ignoring the effects of the intersection on traffic network state. In the current work, the basic parameters of traffic network state evaluation such as the intersection entrance saturation and the mean space speed of road sections are determined by combining the macro road network state evaluation and microscopic traffic state analysis. The traffic network state coefficient is defined as the traffic flow moving resistance, and the critical value of the traffic network coefficient is studied and determined. A new method of road traffic network state analysis is proposed, and the whole simulated road network state is analyzed. Finally, the whole road network state is evaluated and analyzed according to accessibility and connectivity.