Abstract
The travel time of right-turning vehicles on secondary street at unsignalized intersection is discussed in this paper. Under the assumption that the major-street through vehicles’ headway follows Erlang distribution and secondary-street right-turning vehicles’ headway follows Poisson distribution. The right-turning vehicles travel time model is established on the basis of gap theory and M/G/1 queue theory. Comparison is done with the common model based on the assumption that the major-street vehicles’ headway follows Poisson distribution. An intersection is selected to verify each model. The results show that the model established in this paper has stronger applicability, and its most relative error is less than 15%. In addition, the sensitivity analysis has been done. The results show that right-turning flow rate and major-street flow rate have a significant impact on the travel time. Hence, the methodology for travel time of right-turning vehicles at unsignalized intersection proposed in this paper is effective and applicable.
Highlights
As a bottleneck of urban road network, intersections are the emphasis in traffic management and control [1,2,3]
The results show that the model established in this paper has stronger applicability, and its most relative error is less than 15%
The results show that right-turning flow rate and major-street flow rate have a significant impact on the travel time
Summary
As a bottleneck of urban road network, intersections are the emphasis in traffic management and control [1,2,3]. In the binary regression model, it takes right-turning vehicles flow rate and bicycle through flow rate as independent variables Their application conditions were studied, respectively [6]. Liang et al established a right-turning motor vehicles’ travel time model with the consideration of conflicts between motor vehicles and nonmotor vehicles at signalized intersections, and it provides a good reference for the following researches. This paper aims to establish the model of the travel time of right-turning vehicles on secondarystreet at unsignalized intersections in congested urban traffic condition. This provides theoretical support for improving the traffic management, intersection control, designation, evaluation, and ITS application. The final section concludes the paper and gives suggestions for further study
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