Traffic Reliability Model of Linked Intersections Based on Demand/Capacity

Increasing traffic congestion arouses concern with the reliability of transportation systems. In particular, the interference between adjacent intersections often results in the devastation of local road networks. This paper first defines the category of linked intersections and concludes the influencing factors and determination standard on the nature of linking. The paper proposes the concept of linked-intersection reliability, and advances the research category due to the construction of linked intersections. Furthermore, according to the methodology that functional failure should be determined by demand-capacity, this paper develops the model for intersections based on D/C, the model for road section based on congestion level, and combined model based on series system. Last, the applicability of the model is analyzed.