Real-Time Microscopic Traffic Simulation and Optimization at Intersections with Video Traffic Detection

Abstract

in this paper, real-time vehicular data from video traffic detection (VTD) are used for minimizing the travel delay at intersections and a real-time traffic optimization model, based on the SUMO traffic simulation software, is established accordingly. The proposed model is implemented in a small industrial control computer which serves as the communication interface between the traffic signal control system, the traffic simulation and optimization model and the real-time video traffic detection equipment to optimize the respective signal timing plans. The decision to shorten or extend the respective green time can be made at each second under the current development. To verify the results of the simulation study a field study is undertaken in Hefei, China. The overall intersection performances before and after the signal timing optimization are calculated and compared. The results show that the method proposed in this paper can significantly minimize the vehicle delay and the corresponding air pollution in real time.

Traffic flow and emissions improvement via Vehicle‐to‐vehicle and vehicle‐to‐infrastructure communication for an intelligent intersection

“…Finally, by calculating the relation between̈n −̈n −1 as in (20), the transfer function relating to the spacing errors of two successive vehicles is obtained as in (21).…”

“…Because in the real world not all the vehicles are able to connect and communicate with each other and infrastructures, some studies consider groups of human-driven vehicles (HV) and automated vehicles (AV). In another study, a joint algorithm was proposed that optimizes both traffic light signal timing and speed for different ratios of AVs and human-driven speed guidance-enabled vehicles (SGV) to minimize the number of stops [20]. Similarly, Wang et al developed a joint control model; however, in their model, the vehicles form a platoon to cross the intersection with no stop or minimum stop time [21].…”

An improved sliding mode control (SMC) approach for enhancement of communication delay in vehicle platoon system

“…The optimization algorithm performs the computation of the control input in a control horizon window and ensures that the spacing error take only positive values [13]. Real-time vehicular data from video traffic detection (VTD) are used for minimizing the travel delay at intersections and a real-time traffic optimization model, based on the SUMO traffic simulation software, is established accordingly [14]. Sau et al present the statespace representation of the linearised dynamical system [15].…”

An analytical model for a tandem of two traffic-light intersections under semi-actuated and fixed control

“…In the numerical results, we compare the delays computed from our model with those obtained by the traffic microsimulation suite SUMO (Simulation of Urban Mobility, see Lopez et al, 2018). Note that SUMO is a common tool for the analysis of traffic-light control policies, see, e.g., Krajzewicz et al (2005) and Liang et al (2018). Moreover, it is an open-source traffic simulator with relevant features, such as loop detectors needed in the semi-actuated control.…”