An AI intelligence-based traffic safety method and system

Abstract

This invention proposes an AI-based traffic safety system and method. The traffic safety method includes a traffic safety monitoring platform controlling intelligent cameras to monitor traffic information data and the number of traffic accidents at each intersection in real time, and feeding this data back to the monitoring platform. The monitoring platform uses the traffic information data and accident counts to obtain a risk assessment value for each intersection using a traffic safety risk assessment model. Based on the risk assessment value of each intersection, the platform determines the speed limit for adjacent intersections. The system includes modules corresponding to the steps of the method.

Description

Technical Field

[0001] This invention proposes an AI-based traffic safety method and system, belonging to the field of traffic safety technology. Background Technology

[0002] The platform continuously integrates underlying data, breaking down barriers between different devices and establishing connections between them. This enables unified scheduling of access resources. Through deep processing of massive amounts of data and scenario modeling, it presents the current traffic situation in a highly visualized way. Users can intuitively understand areas with high rates of violations, accidents, and congestion within the current road network, providing more effective and scientific support for traffic management. Currently, the data integration of all monitoring devices is low, there is no connection between devices, data utilization is low, and the level of traffic visualization is low, making it inefficient to rely on manpower to discover and solve traffic problems. Summary of the Invention

[0003] This invention provides an AI-based traffic safety method and system to address the inefficiency of relying on human intervention to identify and resolve traffic problems.

[0004] A traffic safety method based on AI intelligence, the traffic safety method comprising:

[0005] The traffic safety monitoring platform controls intelligent cameras to monitor traffic information data and the number of traffic accidents at each intersection in real time, and feeds back the traffic information data and the number of traffic accidents to the traffic safety monitoring platform.

[0006] The traffic safety monitoring platform uses traffic information data and the number of traffic accidents to obtain the risk assessment value of each intersection using a traffic safety risk assessment model;

[0007] The traffic safety monitoring platform determines the speed limit for adjacent intersections based on the risk assessment value of each intersection.

[0008] Furthermore, the traffic safety monitoring platform controls intelligent cameras to monitor traffic information data and the number of traffic accidents at each intersection in real time, and feeds back the traffic information data and the number of traffic accidents to the traffic safety monitoring platform, including:

[0009] The traffic safety monitoring platform sets monitoring periods based on the average daily traffic flow at each intersection;

[0010] The traffic safety monitoring platform sends the monitoring time period for each intersection to the corresponding smart camera at each intersection;

[0011] The traffic safety monitoring platform controls the intelligent camera to monitor the traffic information data and the number of traffic accidents at its corresponding intersection in real time during the monitoring period; wherein, the traffic information data includes traffic flow data, average vehicle speed and / or vehicle spacing, etc.

[0012] The traffic safety monitoring platform controls the smart camera to send the traffic information data and the number of traffic accidents collected during the monitoring period to the traffic safety monitoring platform at the end of the monitoring period.

[0013] Furthermore, the traffic safety monitoring platform sets monitoring periods based on the average daily traffic flow at each intersection, including:

[0014] When the average traffic flow at each intersection is less than the preset first traffic flow threshold, the monitoring period for the intersection is set to 18-25 days.

[0015] When the average traffic flow at each intersection is not lower than the preset first traffic flow threshold, but does not exceed the preset second traffic flow threshold, the monitoring period for the intersection is set to 12-18 days.

[0016] When the average traffic flow at each intersection reaches or exceeds the preset second traffic flow threshold, but does not exceed the preset second traffic flow threshold, the monitoring period corresponding to the intersection is set to 7-12 days.

[0017] Furthermore, the traffic safety monitoring platform determines the speed limit for adjacent intersections based on the risk assessment value of each intersection, including:

[0018] After the traffic safety monitoring platform obtains the risk assessment value of each intersection, it compares the risk assessment value with the risk assessment threshold to obtain the comparison result.

[0019] When the comparison result shows that the risk assessment value exceeds the risk assessment threshold, the traffic safety monitoring platform designates the intersection corresponding to the risk assessment value exceeding the risk assessment threshold as the target intersection.

[0020] The traffic safety monitoring platform retrieves the average traffic flow and speed limit values ​​of the associated intersections connected to the target intersection, and adjusts the speed limit values ​​of the associated intersections by combining the difference between the risk assessment value of the target intersection and the risk assessment threshold, thereby obtaining the adjusted speed limit values ​​of the associated intersections.

[0021] The traffic safety monitoring platform sends the adjusted speed limit values ​​of the associated intersections to the corresponding associated road conditions for speed limit display.

[0022] The speed limit value at the associated intersection is obtained using the following formula:

[0023]

[0024] Where V represents the adjusted speed limit at the associated intersection; V0 represents the original speed limit at the associated intersection; L p L represents the average traffic flow at the associated intersection; y Let L represent the traffic flow corresponding to the maximum traffic flow threshold exceeded by the average traffic flow at the associated intersection. If the average traffic flow at the associated intersection does not exceed any traffic flow threshold, then let L... y =0.38L p F represents the risk assessment value of the target intersection; F0 represents the risk assessment threshold.

[0025] An AI-based traffic safety system, the traffic safety system comprising:

[0026] The traffic monitoring module is used by the traffic safety monitoring platform to control intelligent cameras to monitor traffic information data and the number of traffic accidents at each intersection in real time, and to feed the traffic information data and the number of traffic accidents back to the traffic safety monitoring platform.

[0027] The assessment value acquisition module is used by the traffic safety monitoring platform to obtain the risk assessment value of each intersection using traffic information data and the number of traffic accidents, and a traffic safety risk assessment model.

[0028] The speed limit determination module is used by the traffic safety monitoring platform to determine the speed limit of adjacent intersections based on the risk assessment value of each intersection.

[0029] Furthermore, the traffic monitoring module includes:

[0030] The monitoring period setting module is used by the traffic safety monitoring platform to set the monitoring period based on the average daily traffic flow at each intersection.

[0031] The time period transmission module is used by the traffic safety monitoring platform to send the monitoring time period of each intersection to the corresponding smart camera at each intersection;

[0032] The frequency monitoring module is used by the traffic safety monitoring platform to control the smart camera to monitor the traffic information data and the number of traffic accidents at its corresponding intersection in real time during the monitoring period; wherein, the traffic information data includes traffic flow data, average vehicle speed and / or vehicle spacing, etc.

[0033] The number of times transmission module is used by the traffic safety monitoring platform to control the smart camera to send the traffic information data and the number of traffic accidents collected during the monitoring period to the traffic safety monitoring platform at the end of the monitoring period.

[0034] Furthermore, the monitoring period setting module includes:

[0035] The first time period setting module is used to set the monitoring period for each intersection to 18-25 days when the average traffic flow at each intersection is less than the preset first traffic flow threshold.

[0036] The second time period setting module is used to set the monitoring period corresponding to the intersection to 12-18 days when the average traffic flow at each intersection is not lower than the preset first traffic flow threshold, but does not exceed the preset second traffic flow threshold.

[0037] The third time period setting module is used to set the monitoring period for the intersection to 7-12 days when the average traffic flow at each intersection reaches or exceeds the preset second traffic flow threshold, but does not exceed the preset second traffic flow threshold.

[0038] Furthermore, the speed limit determination module includes:

[0039] The comparison module is used by the traffic safety monitoring platform to compare the risk assessment value of each intersection with the risk assessment threshold after obtaining the risk assessment value, and to obtain the comparison result.

[0040] The target intersection acquisition module is used by the traffic safety monitoring platform to identify the intersection whose risk assessment value exceeds the risk assessment threshold as the target intersection when the comparison result shows that the risk assessment value exceeds the risk assessment threshold.

[0041] The adjustment module is used by the traffic safety monitoring platform to retrieve the average traffic flow and speed limit values ​​of the associated intersections connected to the target intersection, and adjust the speed limit values ​​of the associated intersections by combining the difference between the risk assessment value of the target intersection and the risk assessment threshold, so as to obtain the adjusted speed limit values ​​of the associated intersections.

[0042] The display module is used by the traffic safety monitoring platform to send the adjusted speed limit values ​​of the associated intersections to the corresponding associated road conditions for speed limit display.

[0043] The speed limit value at the associated intersection is obtained using the following formula:

[0044]

[0045] Where V represents the adjusted speed limit at the associated intersection; V0 represents the original speed limit at the associated intersection; L p L represents the average traffic flow at the associated intersection; y Let L represent the traffic flow corresponding to the maximum traffic flow threshold exceeded by the average traffic flow at the associated intersection. If the average traffic flow at the associated intersection does not exceed any traffic flow threshold, then let L... y =0.38L pF represents the risk assessment value of the target intersection; F0 represents the risk assessment threshold.

[0046] Beneficial effects of this invention:

[0047] This invention proposes an AI-based traffic safety method and system that can predict and warn of accidents through data analysis and massive data processing, thus preventing accidents in advance and providing a high degree of visualization of the current traffic situation. The platform utilizes AI technology to achieve high visualization and early warning capabilities, significantly saving human resources and improving information utilization. Attached Figure Description

[0048] Figure 1 This is a flowchart of the method described in this invention;

[0049] Figure 2 This is a system block diagram of the system described in this invention. Detailed Implementation

[0050] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0051] This invention proposes an AI-based traffic safety method, such as... Figure 1 As shown, the traffic safety method includes:

[0052] S1. The traffic safety monitoring platform controls intelligent cameras to monitor traffic information data and the number of traffic accidents at each intersection in real time, and feeds back the traffic information data and the number of traffic accidents to the traffic safety monitoring platform.

[0053] S2. The traffic safety monitoring platform uses traffic information data and the number of traffic accidents to obtain the risk assessment value of each intersection using a traffic safety risk assessment model.

[0054] S3. The traffic safety monitoring platform determines the speed limit for adjacent intersections based on the risk assessment value of each intersection.

[0055] The working principle of the above technical solution is as follows: First, the traffic safety monitoring platform controls intelligent cameras to monitor traffic information data and the number of traffic accidents at each intersection in real time, and feeds back the traffic information data and the number of traffic accidents to the traffic safety monitoring platform; then, the traffic safety monitoring platform uses the traffic information data and the number of traffic accidents to obtain the risk assessment value of each intersection using a traffic safety risk assessment model; finally, the traffic safety monitoring platform determines the speed limit value of adjacent intersections based on the risk assessment value of each intersection.

[0056] The advantages of the above technical solution are as follows: The AI-based traffic safety method proposed in this embodiment can predict and warn of accidents through data analysis and massive data processing, thus preventing accidents in advance and providing a high degree of visualization of the current traffic situation. The platform utilizes AI technology to achieve high visualization and early warning, greatly saving human resources and improving information utilization.

[0057] In one embodiment of the present invention, a traffic safety monitoring platform controls intelligent cameras to monitor traffic information data and the number of traffic accidents at each intersection in real time, and feeds back the traffic information data and the number of traffic accidents to the traffic safety monitoring platform, including:

[0058] S101, the traffic safety monitoring platform sets monitoring periods based on the average daily traffic flow at each intersection;

[0059] S102, The traffic safety monitoring platform sends the monitoring time period of each intersection to the corresponding smart camera at each intersection;

[0060] S103. The traffic safety monitoring platform controls the intelligent camera to monitor the traffic information data and the number of traffic accidents at its corresponding intersection in real time during the monitoring period; wherein, the traffic information data includes traffic flow data, average vehicle speed and / or vehicle spacing, etc.

[0061] S104. The traffic safety monitoring platform controls the intelligent camera to send the traffic information data and the number of traffic accidents collected during the monitoring period to the traffic safety monitoring platform at the end of the monitoring period.

[0062] The working principle of the above technical solution is as follows: First, the traffic safety monitoring platform sets the monitoring period according to the average daily traffic flow of each intersection; then, the traffic safety monitoring platform sends the monitoring period of each intersection to the corresponding smart camera; subsequently, the traffic safety monitoring platform controls the smart camera to monitor the traffic information data and the number of traffic accidents at its corresponding intersection in real time during the monitoring period; wherein, the traffic information data includes traffic flow data, average vehicle speed and / or vehicle spacing, etc.; finally, the traffic safety monitoring platform controls the smart camera to send the traffic information data and the number of traffic accidents collected during the monitoring period to the traffic safety monitoring platform at the end of the monitoring period.

[0063] The effect of the above technical solution is that it can effectively improve the timeliness and efficiency of information acquisition at each intersection, as well as the accuracy of information acquisition at each intersection.

[0064] In one embodiment of the present invention, the traffic safety monitoring platform sets monitoring periods based on the average daily traffic flow at each intersection, including:

[0065] S1011. When the average traffic flow at each intersection is less than the preset first traffic flow threshold, the monitoring period corresponding to the intersection is set to 18-25 days.

[0066] S1012. When the average traffic flow at each intersection is not lower than the preset first traffic flow threshold, but does not exceed the preset second traffic flow threshold, the monitoring period corresponding to the intersection is set to 12-18 days.

[0067] S1013. When the average traffic flow at each intersection reaches or exceeds the preset second traffic flow threshold, but does not exceed the preset second traffic flow threshold, the monitoring period corresponding to the intersection is set to 7-12 days.

[0068] The working principle of the above technical solution is as follows: First, when the average traffic flow at each intersection is less than a preset first traffic flow threshold, the monitoring period for the intersection is set to 18-25 days; then, when the average traffic flow at each intersection is not lower than the preset first traffic flow threshold, but does not exceed the preset second traffic flow threshold, the monitoring period for the intersection is set to 12-18 days; finally, when the average traffic flow at each intersection reaches or exceeds the preset second traffic flow threshold, but does not exceed the preset second traffic flow threshold, the monitoring period for the intersection is set to 7-12 days.

[0069] The above technical solution achieves the following results: by segmenting the monitoring time periods, the accuracy and rationality of traffic flow monitoring can be effectively improved. Simultaneously, it provides accurate reference data for subsequent risk assessment, thereby effectively improving the accuracy of risk assessment.

[0070] In one embodiment of the present invention, the traffic safety monitoring platform determines the speed limit value of adjacent intersections based on the risk assessment value of each intersection, including:

[0071] S301. After the traffic safety monitoring platform obtains the risk assessment value of each intersection, it compares the risk assessment value with the risk assessment threshold to obtain the comparison result.

[0072] S302. When the comparison result shows that the risk assessment value exceeds the risk assessment threshold, the traffic safety monitoring platform shall designate the intersection corresponding to the risk assessment value exceeding the risk assessment threshold as the target intersection.

[0073] S303. The traffic safety monitoring platform retrieves the average traffic flow and speed limit values ​​of the associated intersections connected to the target intersection, and adjusts the speed limit values ​​of the associated intersections by combining the difference between the risk assessment value of the target intersection and the risk assessment threshold, thereby obtaining the adjusted speed limit values ​​of the associated intersections.

[0074] S304. The traffic safety monitoring platform sends the adjusted speed limit values ​​of the associated intersections to the corresponding associated road conditions for speed limit display.

[0075] The speed limit value at the associated intersection is obtained using the following formula:

[0076]

[0077] Where V represents the adjusted speed limit at the associated intersection; V0 represents the original speed limit at the associated intersection; L p L represents the average traffic flow at the associated intersection; y Let L represent the traffic flow corresponding to the maximum traffic flow threshold exceeded by the average traffic flow at the associated intersection. If the average traffic flow at the associated intersection does not exceed any traffic flow threshold, then let L... y =0.38L p F represents the risk assessment value of the target intersection; F0 represents the risk assessment threshold.

[0078] The working principle of the above technical solution is as follows: First, after the traffic safety monitoring platform obtains the risk assessment value of each intersection, it compares the risk assessment value with the risk assessment threshold to obtain a comparison result. Then, when the comparison result shows that the risk assessment value exceeds the risk assessment threshold, the traffic safety monitoring platform designates the corresponding intersection with the risk assessment value exceeding the risk assessment threshold as the target intersection. Next, the traffic safety monitoring platform retrieves the average traffic flow and speed limit values ​​of the associated intersections connected to the target intersection, and, combined with the difference between the risk assessment value of the target intersection and the risk assessment threshold, adjusts the speed limit values ​​of the associated intersections to obtain the adjusted speed limit values. Finally, the traffic safety monitoring platform sends the adjusted speed limit values ​​of the associated intersections to the corresponding associated road conditions for speed limit display.

[0079] The effect of the above technical solution is that it can effectively improve the accuracy of speed limit acquisition at associated intersections and its matching with the actual vehicle situation at the current intersection.

[0080] This invention proposes an AI-based traffic safety system, such as... Figure 2 As shown, the traffic safety system includes:

[0081] The traffic monitoring module is used by the traffic safety monitoring platform to control intelligent cameras to monitor traffic information data and the number of traffic accidents at each intersection in real time, and to feed the traffic information data and the number of traffic accidents back to the traffic safety monitoring platform.

[0082] The assessment value acquisition module is used by the traffic safety monitoring platform to obtain the risk assessment value of each intersection using traffic information data and the number of traffic accidents, and a traffic safety risk assessment model.

[0083] The speed limit determination module is used by the traffic safety monitoring platform to determine the speed limit of adjacent intersections based on the risk assessment value of each intersection.

[0084] The working principle of the above technical solution is as follows: First, the traffic monitoring module controls the traffic safety monitoring platform to control the intelligent camera to monitor the traffic information data and the number of traffic accidents at each intersection in real time, and feeds the traffic information data and the number of traffic accidents back to the traffic safety monitoring platform; then, the assessment value acquisition module controls the traffic safety monitoring platform to obtain the risk assessment value of each intersection using the traffic information data and the number of traffic accidents through the traffic safety risk assessment model; finally, the speed limit determination module controls the traffic safety monitoring platform to determine the speed limit value of adjacent intersections based on the risk assessment value of each intersection.

[0085] The advantages of the above technical solution are as follows: The AI-based traffic safety system proposed in this embodiment can predict and warn of accidents through data analysis and massive data processing, thus preventing accidents in advance and providing a high degree of visualization of the current traffic situation. The platform utilizes AI technology to achieve high visualization and early warning, greatly saving human resources and improving information utilization.

[0086] In one embodiment of the present invention, the traffic monitoring module includes:

[0087] The monitoring period setting module is used by the traffic safety monitoring platform to set the monitoring period based on the average daily traffic flow at each intersection.

[0088] The time period transmission module is used by the traffic safety monitoring platform to send the monitoring time period of each intersection to the corresponding smart camera at each intersection;

[0089] The frequency monitoring module is used by the traffic safety monitoring platform to control the smart camera to monitor the traffic information data and the number of traffic accidents at its corresponding intersection in real time during the monitoring period; wherein, the traffic information data includes traffic flow data, average vehicle speed and / or vehicle spacing, etc.

[0090] The number of times transmission module is used by the traffic safety monitoring platform to control the smart camera to send the traffic information data and the number of traffic accidents collected during the monitoring period to the traffic safety monitoring platform at the end of the monitoring period.

[0091] The working principle of the above technical solution is as follows: First, the monitoring period setting module controls the traffic safety monitoring platform to set the monitoring period according to the average daily traffic flow of each intersection; then, the period sending module controls the traffic safety monitoring platform to send the monitoring period of each intersection to the corresponding smart camera at each intersection; next, the frequency monitoring module controls the traffic safety monitoring platform to control the smart camera to monitor the traffic information data and the number of traffic accidents at its corresponding intersection in real time during the monitoring period; wherein, the traffic information data includes traffic flow data, average vehicle speed and / or vehicle spacing, etc.; finally, the frequency sending module controls the traffic safety monitoring platform to control the smart camera to send the traffic information data and the number of traffic accidents collected during the monitoring period to the traffic safety monitoring platform at the end of the monitoring period.

[0092] The effect of the above technical solution is that it can effectively improve the timeliness and efficiency of information acquisition at each intersection, as well as the accuracy of information acquisition at each intersection.

[0093] In one embodiment of the present invention, the monitoring period setting module includes:

[0094] The first time period setting module is used to set the monitoring period for each intersection to 18-25 days when the average traffic flow at each intersection is less than the preset first traffic flow threshold.

[0095] The second time period setting module is used to set the monitoring period corresponding to the intersection to 12-18 days when the average traffic flow at each intersection is not lower than the preset first traffic flow threshold, but does not exceed the preset second traffic flow threshold.

[0096] The third time period setting module is used to set the monitoring period for the intersection to 7-12 days when the average traffic flow at each intersection reaches or exceeds the preset second traffic flow threshold, but does not exceed the preset second traffic flow threshold.

[0097] The working principle of the above technical solution is as follows: First, when the average traffic flow at each intersection is less than a preset first traffic flow threshold, the monitoring period for that intersection is set to 18-25 days using the first time period setting module; then, when the average traffic flow at each intersection is not less than the preset first traffic flow threshold but does not exceed the preset second traffic flow threshold, the monitoring period for that intersection is set to 12-18 days using the second time period setting module; finally, when the average traffic flow at each intersection reaches or exceeds the preset second traffic flow threshold but does not exceed the preset second traffic flow threshold, the monitoring period for that intersection is set to 7-12 days using the third time period setting module.

[0098] The above technical solution achieves the following results: by segmenting the monitoring time periods, the accuracy and rationality of traffic flow monitoring can be effectively improved. Simultaneously, it provides accurate reference data for subsequent risk assessment, thereby effectively improving the accuracy of risk assessment.

[0099] In one embodiment of the present invention, the speed limit determination module includes:

[0100] The comparison module is used by the traffic safety monitoring platform to compare the risk assessment value of each intersection with the risk assessment threshold after obtaining the risk assessment value, and to obtain the comparison result.

[0101] The target intersection acquisition module is used by the traffic safety monitoring platform to identify the intersection whose risk assessment value exceeds the risk assessment threshold as the target intersection when the comparison result shows that the risk assessment value exceeds the risk assessment threshold.

[0102] The adjustment module is used by the traffic safety monitoring platform to retrieve the average traffic flow and speed limit values ​​of the associated intersections connected to the target intersection, and adjust the speed limit values ​​of the associated intersections by combining the difference between the risk assessment value of the target intersection and the risk assessment threshold, so as to obtain the adjusted speed limit values ​​of the associated intersections.

[0103] The display module is used by the traffic safety monitoring platform to send the adjusted speed limit values ​​of the associated intersections to the corresponding associated road conditions for speed limit display.

[0104] The speed limit value at the associated intersection is obtained using the following formula:

[0105]

[0106] Where V represents the adjusted speed limit at the associated intersection; V0 represents the original speed limit at the associated intersection; L p L represents the average traffic flow at the associated intersection; y Let L represent the traffic flow corresponding to the maximum traffic flow threshold exceeded by the average traffic flow at the associated intersection. If the average traffic flow at the associated intersection does not exceed any traffic flow threshold, then let L... y =0.38L p F represents the risk assessment value of the target intersection; F0 represents the risk assessment threshold.

[0107] The working principle of the above technical solution is as follows: First, after the traffic safety monitoring platform obtains the risk assessment value of each intersection through the comparison module, the risk assessment value is compared with the risk assessment threshold to obtain a comparison result. Then, the target intersection acquisition module controls the traffic safety monitoring platform to select the corresponding intersection whose risk assessment value exceeds the risk assessment threshold as the target intersection when the comparison result shows that the risk assessment value exceeds the risk assessment threshold. Next, the adjustment module controls the traffic safety monitoring platform to retrieve the average traffic flow and speed limit values ​​of the associated intersections connected to the target intersection, and adjusts the speed limit values ​​of the associated intersections based on the difference between the risk assessment value and the risk assessment threshold of the target intersection to obtain the adjusted speed limit values ​​of the associated intersections. Finally, the display module controls the traffic safety monitoring platform to send the adjusted speed limit values ​​of the associated intersections to the corresponding associated road conditions for speed limit display.

[0108] The effect of the above technical solution is that it can effectively improve the accuracy of speed limit acquisition at associated intersections and its matching with the actual vehicle situation at the current intersection.

[0109] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A traffic safety method based on AI intelligence, characterized in that, The traffic safety method includes: The traffic safety monitoring platform controls intelligent cameras to monitor traffic information data and the number of traffic accidents at each intersection in real time, and feeds back the traffic information data and the number of traffic accidents to the traffic safety monitoring platform. The traffic safety monitoring platform uses traffic information data and the number of traffic accidents to obtain the risk assessment value of each intersection using a traffic safety risk assessment model; The traffic safety monitoring platform determines the speed limit for adjacent intersections based on the risk assessment value of each intersection; The traffic safety monitoring platform determines the speed limits for adjacent intersections based on the risk assessment values ​​of each intersection, including: After the traffic safety monitoring platform obtains the risk assessment value of each intersection, it compares the risk assessment value with the risk assessment threshold to obtain the comparison result. When the comparison result shows that the risk assessment value exceeds the risk assessment threshold, the traffic safety monitoring platform designates the intersection corresponding to the risk assessment value exceeding the risk assessment threshold as the target intersection. The traffic safety monitoring platform retrieves the average traffic flow and speed limit values ​​of the associated intersections connected to the target intersection, and adjusts the speed limit values ​​of the associated intersections by combining the difference between the risk assessment value of the target intersection and the risk assessment threshold, thereby obtaining the adjusted speed limit values ​​of the associated intersections. The traffic safety monitoring platform sends the adjusted speed limit values ​​of the associated intersections to the corresponding associated intersections for speed limit display. The speed limit value at the associated intersection is obtained using the following formula: ； Where V represents the adjusted speed limit at the associated intersection; V0 represents the original speed limit at the associated intersection; L p L represents the average traffic flow at the associated intersection; y Let L represent the traffic flow corresponding to the maximum traffic flow threshold exceeded by the average traffic flow of the associated intersection. If the average traffic flow of the associated intersection does not exceed any traffic flow threshold, then let L... y =0.38L p F represents the risk assessment value of the target intersection; F0 represents the risk assessment threshold.

2. The traffic safety method according to claim 1, characterized in that, The traffic safety monitoring platform controls intelligent cameras to monitor traffic information data and the number of traffic accidents at each intersection in real time, and feeds back the traffic information data and the number of traffic accidents to the traffic safety monitoring platform, including: The traffic safety monitoring platform sets monitoring periods based on the average daily traffic flow at each intersection; The traffic safety monitoring platform sends the monitoring time period for each intersection to the corresponding smart camera at each intersection; The traffic safety monitoring platform controls the intelligent camera to monitor the traffic information data and the number of traffic accidents at its corresponding intersection in real time during the monitoring period; wherein, the traffic information data includes traffic flow data, average vehicle speed and / or vehicle spacing; The traffic safety monitoring platform controls the smart camera to send the traffic information data and the number of traffic accidents collected during the monitoring period to the traffic safety monitoring platform at the end of the monitoring period.

3. The traffic safety method according to claim 2, characterized in that, The traffic safety monitoring platform sets monitoring periods based on the average daily traffic flow at each intersection, including: When the average traffic flow at each intersection is less than the preset first traffic flow threshold, the monitoring period for the intersection is set to 18-25 days. When the average traffic flow at each intersection is not lower than the preset first traffic flow threshold, but does not exceed the preset second traffic flow threshold, the monitoring period for the intersection is set to 12-18 days. When the average traffic flow at each intersection reaches or exceeds the preset second traffic flow threshold, but does not exceed the preset second traffic flow threshold, the monitoring period corresponding to the intersection is set to 7-12 days.

4. A traffic safety system based on AI intelligence, characterized in that, The traffic safety system includes: The traffic monitoring module is used by the traffic safety monitoring platform to control intelligent cameras to monitor traffic information data and the number of traffic accidents at each intersection in real time, and to feed the traffic information data and the number of traffic accidents back to the traffic safety monitoring platform. The assessment value acquisition module is used by the traffic safety monitoring platform to obtain the risk assessment value of each intersection using traffic information data and the number of traffic accidents, and a traffic safety risk assessment model. The speed limit determination module is used by the traffic safety monitoring platform to determine the speed limit of adjacent intersections based on the risk assessment value of each intersection. The speed limit determination module includes: The comparison module is used by the traffic safety monitoring platform to compare the risk assessment value of each intersection with the risk assessment threshold after obtaining the risk assessment value, and to obtain the comparison result. The target intersection acquisition module is used by the traffic safety monitoring platform to identify the intersection whose risk assessment value exceeds the risk assessment threshold as the target intersection when the comparison result shows that the risk assessment value exceeds the risk assessment threshold. The adjustment module is used by the traffic safety monitoring platform to retrieve the average traffic flow and speed limit values ​​of the associated intersections connected to the target intersection, and adjust the speed limit values ​​of the associated intersections by combining the difference between the risk assessment value of the target intersection and the risk assessment threshold, so as to obtain the adjusted speed limit values ​​of the associated intersections. The display module is used by the traffic safety monitoring platform to send the adjusted speed limit values ​​of the associated intersections to the corresponding associated intersections for speed limit display. The speed limit value at the associated intersection is obtained using the following formula: ； Where V represents the adjusted speed limit at the associated intersection; V0 represents the original speed limit at the associated intersection; L p L represents the average traffic flow at the associated intersection; y Let L represent the traffic flow corresponding to the maximum traffic flow threshold exceeded by the average traffic flow of the associated intersection. If the average traffic flow of the associated intersection does not exceed any traffic flow threshold, then let L... y =0.38L p F represents the risk assessment value of the target intersection; F0 represents the risk assessment threshold.

5. The traffic safety system according to claim 4, characterized in that, The traffic monitoring module includes: The monitoring period setting module is used by the traffic safety monitoring platform to set the monitoring period based on the average daily traffic flow at each intersection. The time period transmission module is used by the traffic safety monitoring platform to send the monitoring time period of each intersection to the corresponding smart camera at each intersection; The frequency monitoring module is used by the traffic safety monitoring platform to control the smart camera to monitor the traffic information data and the number of traffic accidents at its corresponding intersection in real time during the monitoring period; wherein, the traffic information data includes traffic flow data, average vehicle speed and / or vehicle spacing; The number of times transmission module is used by the traffic safety monitoring platform to control the smart camera to send the traffic information data and the number of traffic accidents collected during the monitoring period to the traffic safety monitoring platform at the end of the monitoring period.

6. The traffic safety system according to claim 5, characterized in that, The monitoring time period setting module includes: The first time period setting module is used to set the monitoring period for each intersection to 18-25 days when the average traffic flow at each intersection is less than the preset first traffic flow threshold. The second time period setting module is used to set the monitoring period corresponding to the intersection to 12-18 days when the average traffic flow at each intersection is not lower than the preset first traffic flow threshold, but does not exceed the preset second traffic flow threshold. The third time period setting module is used to set the monitoring period for the intersection to 7-12 days when the average traffic flow at each intersection reaches or exceeds the preset second traffic flow threshold, but does not exceed the preset second traffic flow threshold.

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