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1.发明公开公开(公告)号：US20230206753A1
公开(公告)日：2023-06-29
申请号：US17562585
申请日：2021-12-27
申请人： HERE Global B.V.
发明人： Jingwei XU , Yuxin GUAN , Bruce BERNHARDT , Weimin HUANG , Ian HE
CPC分类号： G08G1/0129 , G08G1/052 , G01C21/3691
摘要： An approach is provided for traffic data blending based on road segment travel time reliability during traffic prediction. The approach involves, for instance, retrieving real-time traffic information and/or historical traffic information for each road segment within a geographic area. The approach also involves aggregating traffic flow speed data in the real-time traffic information to compute traffic pattern data for each road segment. The traffic pattern data includes static speed data of each said road segment. The approach further involves aggregating traffic flow speed data in the historical traffic information to compute travel time reliability index metric(s) for each said road segment. The approach further involves determining, based on the travel time reliability index metric(s), to use the traffic pattern data, a mean, or a percentile of a road segment travel time distribution in the historical traffic information for traffic prediction associated with each said road segment.
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公开(公告)号：US20210174669A1
公开(公告)日：2021-06-10
申请号：US16707894
申请日：2019-12-09
申请人： HERE Global B.V.
发明人： Yuxin GUAN , Jingwei XU , Arnold SHEYNMAN , Bruce BERNHARDT , Weimin HUANG
摘要： A system, a method, and a computer program product may be provided for generating traffic congestion estimation data of one or more lanes in a region. A system may include a memory configured to store computer program code and a processor configured to execute the computer program code to obtain image data associated with the region. The processor may be configured to determine a count of one or more first movable objects in one or lanes, based on image data, calculate a lane object static capacity of the one or more lanes, based on one or more map free flow or speed limit attributes associated with the one or more lanes and generate the traffic congestion estimation data based on count of first movable objects in the one or more lanes, the moving speed of movable objects crossing multiple image frames, the lane object static capacity of lanes.
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3.发明申请公开(公告)号：US20190114908A1
公开(公告)日：2019-04-18
申请号：US16229392
申请日：2018-12-21
申请人： HERE Global B.V.
发明人： Jingwei XU , Xin GAO , Weimin HUANG , Bruce BERNHARDT
IPC分类号： G08G1/01
摘要： A method for improved traffic congestion estimation is provided using signal phase and timing data from traffic signals at intersections and probe data from vehicles traversing said intersections. An example method may include: identifying each of a plurality of paths through an intersection; identifying signal phase and timing data for each traffic light associated with each path through the intersection; receiving probe data for vehicles approaching or traversing the intersection; estimating a number of vehicles failing to traverse the intersection along a path through the intersection; estimating a congestion status of the path through the intersection based on the number of vehicles failing to traverse the intersection; and causing the congestion status to be provided to permit updating of a map to reflect the congestion status.
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公开(公告)号：US20240194056A1
公开(公告)日：2024-06-13
申请号：US18077734
申请日：2022-12-08
申请人： HERE Global B.V.
发明人： Leon STENNETH , Bruce BERNHARDT , Advait Mohan RAUT , Jingwei XU , Alex AVERBUCH , Weimin HUANG
CPC分类号： G08G1/0112 , G06V20/58 , G06Q50/08
摘要： The disclosure provides a system, a method, and a computer program product for detecting a road work zone. The method comprises detecting a road object based on sensor data and map data. The method may include determining a first location associated with the road object based on location of a vehicle capturing the road object at a time of road object sighting and the sensor data. The method may include, based on image data captured by the vehicle at the time of road object sighting, determining a road object type and supplemental information associated with the road object. The method further includes, detecting the road work zone based on the first location, the road object type, and the supplemental information.
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5.发明公开公开(公告)号：US20230222905A1
公开(公告)日：2023-07-13
申请号：US17562532
申请日：2021-12-27
申请人： HERE Global B.V.
发明人： Jingwei XU , Yuxin GUAN , Bruce BERNHARDT , Weimin HUANG
CPC分类号： G08G1/082 , G06V10/82 , G06V20/584 , G08G1/08 , G08G1/083 , G08G1/0112
摘要： An approach is provided for traffic Signal Phase and Timing (SPaT) verification using sensor data and probe data. The approach involves, for instance, retrieving image data captured using a sensor of a vehicle traveling within proximity of a traffic light. The approach also involves processing the image data to identify at least one transition of the traffic light between one or more traffic light states. The approach further involves determining a transition time, a cycle time, or a combination thereof between the one or more traffic light states based on the identified at least one transition of the traffic light. The approach further involves performing a comparison of signal phase and timing (SPaT) data of the traffic light with the transition time, the cycle time, or a combination thereof and providing the comparison of the SPaT data as an output.
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公开(公告)号：US20240203246A1
公开(公告)日：2024-06-20
申请号：US18082350
申请日：2022-12-15
申请人： HERE Global B.V.
发明人： Jingwei XU , James JOSEPH , Bruce BERNHARDT , Ian HE , Joe CIPRIAN , Weimin HUANG , Yuxin GUAN
IPC分类号： G08G1/01
CPC分类号： G08G1/0141 , G08G1/0125 , G01C21/3492
摘要： The disclosure provides a method, a system, and a computer program product for predicting traffic information for at least one map tile area. The method comprises obtaining probe data and map attribute data for each of a plurality of road segments in the at least one map tile area. The method may include generating current traffic condition data for each of the plurality of road segments in the at least one map tile area based on the obtained probe data and the obtained map attribute data. The method may further include obtaining historical traffic pattern data associated with each of the plurality of road segments in the at least one map tile area. The method may further include generating a tile based traffic index (TTI) for the at least one map tile area based on aggregating the current traffic condition data and the historical traffic pattern data of the plurality of road segments in the at least one map tile area and providing TTI and predicting the traffic information for the at least one map tile area based on the generated tile based traffic index (TTI).
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公开(公告)号：US20240194059A1
公开(公告)日：2024-06-13
申请号：US18077081
申请日：2022-12-07
申请人： HERE Global B.V.
发明人： Weimin HUANG , Jingwei XU , Bruce BERNHARDT , Yuxin GUAN
CPC分类号： G08G1/0133 , G08G1/0108 , G08G1/0129 , G08G1/0141 , G08G1/0145 , G08G1/052
摘要： A system, a method, and a computer program product may be provided for generating traffic congestion data for a road in a region. The system may include a memory configured to store computer executable instructions and a processor configured to execute the computer executable instructions to obtain probe data and map data. The processor may be further configured to generate traffic condition data for the road. The processor may be further configured to determine speed changes data associated with one or more vehicles. The processor may be further configured to calculate congestion length, time period, congestion speed for the one or more vehicles to reach a non-congestion state from a congestion state. The processor may be further configured to generate the traffic congestion data, based on the speed changes data, congestion length, a time period and congestion speed associated with the one or more vehicles on the road.
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8.发明公开公开(公告)号：US20230204372A1
公开(公告)日：2023-06-29
申请号：US17562645
申请日：2021-12-27
申请人： HERE Global B.V.
发明人： Jingwei XU , Yuxin GUAN , Bruce BERNHARDT , Weimin HUANG
CPC分类号： G01C21/3492 , G06V20/588 , G08G1/0137 , G01C21/30 , G06V20/582
摘要： An approach is provided for determining road work zone travel time reliability based on vehicle sensor data. The approach involves, for instance, aggregating telematic data generated by vehicles traveling within a geographic area, to detect a road work zone and/or active time period(s) thereof. The approach also involves identifying a start location and an end location of the road work zone. The approach further involves identifying a starting time point when one of the vehicles approaching the start location and an end time point when the vehicle passes the end location. The approach further involves calculating a time difference between the start and end time points as a travel time through the road work zone. The approach further involves aggregating the vehicle travel times, to compute work zone travel time reliability index(es) for the road work zone. The approach further involves providing the travel time reliability index(es) as an output.
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公开(公告)号：US20220207994A1
公开(公告)日：2022-06-30
申请号：US17138583
申请日：2020-12-30
申请人： HERE Global B.V.
发明人： Jingwei XU , Yuxin GUAN , Bruce BERNHARDT , Weimin HUANG
摘要： A method, a system, and a computer program product are provided for predicting road closure in a region. The method comprises obtaining, probe data, such as sensor data, and map data, for the region. The method may include detecting a change in speed of a one or more vehicle on a road, based on the obtained probe data and the obtained map data for the region, wherein the change in speed is associated with a slowdown event associated with the one or more vehicles. The method may include identifying a vehicle event on the road based on the detected change in speed of the one or more vehicles, wherein the vehicle event is associated with a location corresponding to a matching trajectory of the one or more vehicles and predicting the road closure based on the identified vehicle event.
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公开(公告)号：US20220038860A1
公开(公告)日：2022-02-03
申请号：US17387661
申请日：2021-07-28
申请人： HERE Global B.V.
发明人： Jingwei XU , Yuxin GUAN , Bruce BERNHARDT , Weimin HUANG
摘要： An approach is provided for identifying and characterizing mobile work zones (e.g., roadway striping, pothole filling, tree trimming, etc.). The approach, for example, involves processing probe data at a lane level to determine at least one forward forming shockwave associated with a congestion front of a mobile roadwork zone on at least one lane. The approach also involves providing data indicating the mobile roadwork zone as an output. The approach further involves determining a propagation rate of the mobile roadwork zone. The approach further involves determining a congestion recovery speed, where the congestion is caused by the mobile roadwork zone.
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