Urban traffic control system and method

Abstract

The invention belongs to the technical field of intelligent traffic, and particularly relates to an urban traffic control system. The urban traffic control system comprises traffic lights arranged on intersections, local traffic controllers and a plurality of cameras, and the local traffic controllers and the cameras are arranged on the intersections. The traffic lights and the local traffic controllers are connected for signal control, the cameras transmit collected real-time traffic data information to the local traffic controllers, and the local traffic controllers on the intersections are connected with an urban traffic control center for data transmission. According to the urban traffic control system, the system is connected and matched with a vehicle recognition camera through data transmission, the real-time traffic state data information of all the intersections is collected in real time, after control over the traffic of the intersections is optimized, the traffic signals of all the intersections are centralizedly and coordinately controlled in real time, and optimal configuration of urban traffic is achieved. The invention further discloses an urban traffic control method. Intelligent and user-friendly urban traffic management is achieved.

Description

technical field [0001] The invention belongs to the technical field of intelligent transportation, and in particular relates to an urban traffic control system and a control method. Background technique [0002] The traffic light time of existing traffic control system is basically set by experience. The traffic control signal at the current intersection will not be adjusted in real time according to the change of traffic flow. There are often red lights in the direction with cars, and green lights in the direction without cars for a long time; When the red and green lights change, the car in the direction of the original green light is blocked at the intersection, and now the car in the direction of the green light cannot pass through the intersection, thereby further causing congestion at the intersection. The fact that the actual road vehicle status and traffic control signals are not synchronized will increase the number and time of vehicle stops, waste existing road re...

AI Technical Summary

Problems solved by technology

[0004] But at every intersection, it is difficult to have traffic police on-site command 24 hours a day

There are also many problems and difficulties in dispatching traffic based on video. In particular, there are thousands of cameras in every city. Even if the monitoring video of intersections is transmitted to the control center, there are not so many dispatchers who monitor the video images at any time and make decisions based on the video. Adjust the control signals of each intersection in real time according to the vehicle situation on the road

Moreover, it is impossible for many traffic dispatchers to coordinate well with each other. They can only partially optimize the monitored intersections, and cannot optimize the traffic control signals of the entire city in real time.

From the perspective of operating costs, the camera video transmission has a large amount of data and occupies a high bandwidth. It is impossible to transmit through the wireless network of the mobile phone. It is necessary to rent a dedicated telecommunication channel. The operating cost is very high. The surveillance video of so many intersections is transmitted to the control center. unrealistic

Images