Vehicle dispatching method and system at intersection without signal lights

Through the vehicle scheduling method of signal-free intersections, fleet division and vehicle collaborative decision-making technology are used to solve the traffic accidents and traffic efficiency problems of signal-free intersections during urbanization, and achieve safe and efficient traffic flow management.

CN117636664BActive Publication Date: 2025-03-25DONGFENG MOTOR GRP
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Patent Information

Application Number
CN202311604717.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-11-27
Publication Date
2025-03-25
Estimated Expiration
2043-11-27

AI Technical Summary

Technical Problem

In the process of rapid urbanization, many intersections have not yet been laid with signal lights, which makes it easy for vehicles to pass through. Setting up signal lights at intersections with small traffic is not only costly but also affects traffic efficiency.

Method used

The vehicle dispatching method for intersections without signal lights is used. By obtaining the vehicles to be passed and dividing them into convoys, we can judge whether there are overlapping areas in the running trajectory of the convoy when passing through the intersection. If there is, calculate the possible collision area and the time when the convoy arrives in the area, and perform vehicle dispatching according to the principle of first come and then arrive, and control the vehicle to pass first or slow down to avoid collision.

Benefits of technology

It effectively solves the problem of congestion and collisions that are prone to intersections without signal lights, improves traffic efficiency, and reduces the delay and collision risks caused by frequent communication between vehicles and roadsides.

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Abstract

This invention discloses a vehicle dispatching method and system for intersections without traffic lights. The method includes: acquiring vehicles waiting to cross at the intersection without traffic lights and dividing them into platoons; identifying the two platoons closest to the intersection and determining whether their trajectories overlap when crossing the intersection; if not, the two platoons will not collide, and the two platoons will pass through the intersection normally; if so, there is a possibility of collision, and the overlapping area is the potential collision area; calculating the arrival time of the two platoons at the potential collision area, and prioritizing the platoon that arrives first according to the principle of first-come, first-served, and controlling the other platoon to pass later; determining whether a collision will occur when the two platoons pass through the intersection at their current speed; if so, controlling the platoon to slow down; if not, controlling the platoon to accelerate. This invention can solve the problem of congestion and collisions at intersections with low traffic volume.
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