# US 11,443,621 B2 · Method and apparatus for adjusting channelization of traffic intersection > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,443,621 B2 - Document ID: US11443621B2 - Status: Granted - Kind: B2 - Application number: 17/115,328 - Filed: 2020-12-08 - Published: 2021-11-18 - Granted: 2022-09-13 - Earliest claimed: 2020-05-14 - Assignees: Apollo Intelligent Connectivity (Beijing) Technology Co., Ltd. - Applicants: Beijing Baidu Netcom Science and Technology Co., Ltd. - Inventors: Qiqi Xu; Fan Yang; Yongyi Sun; Chengfa Wang; Xuan Huang - Web page: https://patentgrep.com/patent/US11443621B2 ## CPC - G08G 1/056: with provision for distinguishing direction of travel - G08G 1/08: according to detected number or speed of vehicles - G06V 20/40: in video content (extracting overlay text G06V20/62; video retrieval G06F16/70; processing of video elementary streams in video servers H04N21/234; processing of video elementary streams in video clients H04N21/44) - G06V 20/54: of traffic, e.g. cars on the road, trains or boats - G08G 1/0133: {for classifying traffic situation} - G08G 1/0145: {for active traffic flow control} - G08G 1/081: Plural intersections under common control - G08G 1/083: Controlling the allocation of time between phases of a cycle - G01S 19/393: {Trajectory determination or predictive tracking, e.g. Kalman filtering} - G08G: TRAFFIC CONTROL SYSTEMS (guiding railway traffic, ensuring the safety of railway traffic B61L; arrangement of road signs or traffic signals E01F9/00; radar or analogous systems, sonar systems, lidar systems specially adapted for traffic control G01S13/91, G01S15/88, G01S17/88; {radar or analogous systems, sonar systems, lidar systems specially adapted for anti-collision purposes G01S13/93, G01S15/93, G01S17/93}) - G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING - G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES ## Abstract A method and apparatus for adjusting channelization of a traffic intersection are proposed. The specific implementation of the method is: obtaining a first traffic characteristic of vehicles at each of a plurality of target positions in a process of vehicles in a target traveling direction traveling through the traffic intersection from upstream to downstream in a preset first time period; generating first traffic change information of the traffic intersection based on the first traffic characteristic at each of the plurality of target positions; and in response to that the first traffic change information satisfies a preset first change distribution, generating channelization adjustment information for non-motorized vehicle lanes of the traffic intersection. ## Claims ### Claim 1 A method for adjusting channelization of a traffic intersection, comprising: obtaining a first traffic characteristic of vehicles at each of a plurality of target positions in a process of vehicles in a target traveling direction traveling through the traffic intersection from upstream to downstream in a preset first time period; generating first traffic change information of the traffic intersection based on the first traffic characteristic at each of the plurality of target positions; and in response to that the first traffic change information satisfies a preset first change distribution, generating channelization adjustment information for non-motorized vehicle lanes of the traffic intersection, wherein generating the first traffic change information of the traffic intersection based on the first traffic characteristic of the vehicles at each of the plurality of target positions comprises: generating a traffic change curve of the traffic intersection by performing calculation on the first traffic characteristic at each of the plurality of target positions based on a preset function; determining a target value of each of a plurality of target points on the traffic change curve; and generating the first traffic change information based on the target value of each of the plurality of target points. ### Claim 2 (depends on 1) The method of claim 1, wherein obtaining the first traffic characteristic of the vehicles at each of the plurality of target positions in the process of the vehicles in the target traveling direction traveling through the traffic intersection from upstream to downstream in the preset first time period comprises: analyzing a video of the traffic intersection to extract global positioning system (GPS) trajectory data comprising a position characteristic and a time characteristic of the vehicles in the target traveling direction; obtaining target GPS trajectory data indicating traveling through the traffic intersection with a green light on in the first time period based on the time characteristic; and calculating a speed characteristic corresponding to each of the plurality of target positions based on a position characteristic and a time characteristic of the target GPS trajectory data, the plurality of target positions comprising an upstream exit position, an intersection center position, and a downstream entrance position. ### Claim 3 (depends on 1) The method of claim 1, further comprising: in response to that the first traffic change information satisfies a preset second change distribution, obtaining a second traffic characteristic of vehicles at each of the plurality of target positions in the process of the vehicles in the target traveling direction traveling through the traffic intersection from upstream to downstream in a preset second time period; generating second traffic change information of the traffic intersection based on the second traffic characteristic at each of the plurality of target positions; comparing the first traffic change information with the second traffic change information; and in response to a difference between the first traffic change information and the second traffic change information being greater than a preset threshold, generating adjustment information for an information control device of the traffic intersection. ### Claim 4 (depends on 3) The method of claim 3, after comparing the first traffic change information with the second traffic change information, further comprising: in response to the difference between the first traffic change information and the second traffic change information being less than or equal to the preset threshold, generating lane adjustment information of the traffic intersection. ### Claim 5 An electronic device, comprising: at least one processor; and a storage device including a memory communicatively connected to the at least one processor, wherein the memory stores an instruction executable by the at least one processor, and when the instruction is executed by the at least one processor, the at least one processor implement a method for adjusting channelization of the traffic intersection, wherein the method comprises: obtaining a first traffic characteristic of vehicles at each of a plurality of target positions in a process of vehicles in a target traveling direction traveling through the traffic intersection from upstream to downstream in a preset first time period; generating first traffic change information of the traffic intersection based on the first traffic characteristic at each of the plurality of target positions; and in response to that the first traffic change information satisfies a preset first change distribution, generating channelization adjustment information for non-motorized vehicle lanes of the traffic intersection, wherein generating the first traffic change information of the traffic intersection based on the first traffic characteristic of the vehicles at each of the plurality of target positions comprises: generating a traffic change curve of the traffic intersection by performing calculation on the first traffic characteristic at each of the plurality of target positions based on a preset function; determining a target value of each of a plurality of target points on the traffic change curve; and generating the first traffic change information based on the target value of each of the plurality of target points. ### Claim 6 (depends on 5) The electronic device of claim 5, wherein obtaining the first traffic characteristic of the vehicles at each of the plurality of target positions in the process of the vehicles in the target traveling direction traveling through the traffic intersection from upstream to downstream in the preset first time period comprises: analyzing a video of the traffic intersection to extract global positioning system (GPS) trajectory data comprising a position characteristic and a time characteristic of the vehicles in the target traveling direction; obtaining target GPS trajectory data indicating traveling through the traffic intersection with a green light on in the first time period based on the time characteristic; and calculating a speed characteristic corresponding to each of the plurality of target positions based on a position characteristic and a time characteristic of the target GPS trajectory data, the plurality of target positions comprising an upstream exit position, an intersection center position, and a downstream entrance position. ### Claim 7 (depends on 5) The electronic device of claim 5, further comprising: in response to that the first traffic change information satisfies a preset second change distribution, obtaining a second traffic characteristic of vehicles at each of the plurality of target positions in the process of the vehicles in the target traveling direction traveling through the traffic intersection from upstream to downstream in a preset second time period; generating second traffic change information of the traffic intersection based on the second traffic characteristic at each of the plurality of target positions; comparing the first traffic change information with the second traffic change information; and in response to a difference between the first traffic change information and the second traffic change information being greater than a preset threshold, generating adjustment information for an information control device of the traffic intersection. ### Claim 8 (depends on 7) The electronic device of claim 7, after comparing the first traffic change information with the second traffic change information, further comprising: in response to the difference between the first traffic change information and the second traffic change information being less than or equal to the preset threshold, generating lane adjustment information of the traffic intersection. ### Claim 9 A non-transitory computer-readable storage medium having a computer instruction stored thereon, wherein the computer instruction is configured to make a computer implement a method for adjusting channelization of the traffic intersection, the method comprising: obtaining a first traffic characteristic of vehicles at each of a plurality of target positions in a process of vehicles in a target traveling direction traveling through the traffic intersection from upstream to downstream in a preset first time period; generating first traffic change information of the traffic intersection based on the first traffic characteristic at each of the plurality of target positions; and in response to that the first traffic change information satisfies a preset first change distribution, generating channelization adjustment information for non-motorized vehicle lanes of the traffic intersection, wherein generating the first traffic change information of the traffic intersection based on the first traffic characteristic of the vehicles at each of the plurality of target positions comprises: generating a traffic change curve of the traffic intersection by performing calculation on the first traffic characteristic at each of the plurality of target positions based on a preset function; determining a target value of each of a plurality of target points on the traffic change curve; and generating the first traffic change information based on the target value of each of the plurality of target points. ### Claim 10 (depends on 9) The storage medium of claim 9, wherein obtaining the first traffic characteristic of the vehicles at each of the plurality of target positions in the process of the vehicles in the target traveling direction traveling through the traffic intersection from upstream to downstream in the preset first time period comprises: analyzing a video of the traffic intersection to extract global positioning system (GPS) trajectory data comprising a position characteristic and a time characteristic of the vehicles in the target traveling direction; obtaining target GPS trajectory data indicating traveling through the traffic intersection with a green light on in the first time period based on the time characteristic; and calculating a speed characteristic corresponding to each of the plurality of target positions based on a position characteristic and a time characteristic of the target GPS trajectory data, the plurality of target positions comprising an upstream exit position, an intersection center position, and a downstream entrance position. ### Claim 11 (depends on 9) The storage medium of claim 9, the method further comprising: in response to that the first traffic change information satisfies a preset second change distribution, obtaining a second traffic characteristic of vehicles at each of the plurality of target positions in the process of the vehicles in the target traveling direction traveling through the traffic intersection from upstream to downstream in a preset second time period; generating second traffic change information of the traffic intersection based on the second traffic characteristic at each of the plurality of target positions; comparing the first traffic change information with the second traffic change information; and in response to a difference between the first traffic change information and the second traffic change information being greater than a preset threshold, generating adjustment information for an information control device of the traffic intersection. ### Claim 12 (depends on 11) The storage medium of claim 11, after comparing the first traffic change information with the second traffic change information, the method further comprising: in response to the difference between the first traffic change information and the second traffic change information being less than or equal to the preset threshold, generating lane adjustment information of the traffic intersection.