Bus Signal Priority Control Method Based on Video Detection Technology at Urban Intersection

In order to improve the traffic efficiency of public transportation, alleviate the urban traffic congestion and improve the overall traffic efficiency. On the one hand, this paper proposed a method for identifying bus vehicles with signal priority based on video detectors, which solved the shortcomings of current GPS signal priority control methods such as inaccurate GPS positioning, unstable wireless communication transmission signals, and high construction costs. On the other hand, the algorithm logic of bus signal priority control was proposed. The algorithm took average passenger delay as the optimization index, realizes the signal priority of bus at urban intersections. At the same time, considered reducing the negative impact of public transport signal priority on non-priority social vehicles. Finally, the simulation test of actual urban intersection cases was carried out by using VISSIM micro simulation software. The simulation results showed that, compared with the traditional signal control method, considered the bus signal priority signal timing scheme can effectively reduce the average passenger delay and vehicle queue length, and further improve the traffic efficiency of the intersection.