Multi-request conditional active type tramcar signal precedence system and method

Abstract

The invention discloses a multi-request conditional active type tramcar signal precedence system and method. According to the system and method, multi-detection and multi-request technology is adopted, namely, pre detection, startup detection, stop line detection and empting detection are adopted; each time a signal machine receives a precedence request, and the signal machine performs response of different degrees and different actions according to the operation condition of a current phase and a current traffic condition; request information emitted out each time all contains priority information; and priorities are formulated according to the punctuality and passenger capacity of current tramcars, and the priorities can be divided into several levels. The multi-request conditional active type tramcar signal precedence system and method of the invention have the advantages of high response speed, good flexibility, no missed detection and high reliability, and can greatly improve traffic signal precedence effects. According to the system and method of the invention, the demands of social transportation are considered, and the impact of signal precedence on the social transportation can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of transportation management, in particular to a conditional active tram signal priority system method for multiple requests. Background technique [0002] As a medium-capacity public transportation, trams need to obtain signal priority when passing through intersections. The current tram signal priority request processing process is as follows: the tram is detected at a certain distance before reaching the intersection, and the traffic signal system responds and gives a priority signal. The detection distance is generally about 50m ~ 200m. The defect is reflected in: [0003] 1) Only one detection, may miss detection. [0004] 2) The detection distance is too short, the traffic signal system only takes about 10-20s to respond, the room for adjustment is small, the effect is not good, and the sudden change of the signal has a greater impact on social vehicles in other directions. [0005] 3) If the signa...

AI Technical Summary

Problems solved by technology

[0003] 1) Only one detection, may miss detection

[0004] 2) The detection distance is too short, the traffic signal system only takes about 10-20s to respond, the room for adjustment is small, the effect is not good, and the sudden change of the signal has a greater impact on social vehicles in other directions

[0005] 3) If the signal priority request or processing is unsuccessful and the tram stops in front of the intersection, the traffic signal system cannot know the situation and cannot continue to respond

[0006] 4) After the traffic signal system gives the priority traffic signal, it is impossible to know whether the tram has passed the intersection. If the traffic signal is cut off after a fixed period of time and other subsequent phases are run, it may lead to potential safety hazards

[0007] 5) Making signal priority adjustments only considering the needs of trams will encroach on transit time resources in other directions and adversely affect other social traffic

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