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公开(公告)号：US12014629B2
公开(公告)日：2024-06-18
申请号：US17646397
申请日：2021-12-29
Applicant: ALIBABA GROUP HOLDING LIMITED
Inventor： Wanli Min , Jiawei Wang , Zhenggang Wang
CPC classification number: G08G1/082 , G08G1/0125 , G08G1/08 , G08G1/083
Abstract: Embodiments of the present disclosure can provide a road traffic analysis method and an apparatus. The method can comprise obtaining a traffic parameter of a road intersection by analyzing road traffic information of the road intersection, determining a reference adjustment length for each phase of a traffic signal cycle corresponding to each lane of the road intersection based on the road traffic information and the traffic parameter. The traffic signal cycle has one or more phases. The method can also comprise determining a first adjustment length when a difference between the reference adjustment length and the first adjustment length satisfies a condition associated with the lanes of the road intersection and the corresponding traffic parameter, and adjusting the phases of the traffic light cycle at the road intersection based on the first adjustment length for each phase.
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2.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
Applicant: HERE Global B.V.
Inventor： Jingwei XU , Yuxin GUAN , Bruce BERNHARDT , Weimin HUANG
CPC classification number: G08G1/082 , G06V10/82 , G06V20/584 , G08G1/08 , G08G1/083 , G08G1/0112
Abstract: 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：US20230130870A1
公开(公告)日：2023-04-27
申请号：US17508407
申请日：2021-10-22
Applicant: Richard Wohler
Inventor： Richard Wohler
Abstract: A traffic light control assembly includes a plurality of mounting poles each attached to a cross beam of a respective traffic signal at a roadway intersection. A plurality of light detection and ranging sensors is each mounted to a respective mounting pole to be elevated over traffic on the roadway. Each of the light detection and ranging sensors is positioned to sense the number of vehicles that are stopped at an opposing traffic signal. Each of the light detection and ranging sensors is in electrical communication with a remote data unit thereby facilitating the remote data unit to analyze data gathered by each of the light detection and ranging sensors with respect to the number of vehicles. Moreover, the remote data unit adjusts timing of the traffic signals to most efficiently direct traffic through the intersection with respect to the number of vehicles that are approaching the intersection.
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公开(公告)号：US20220122454A1
公开(公告)日：2022-04-21
申请号：US17646397
申请日：2021-12-29
Applicant: ALIBABA GROUP HOLDING LIMITED
Inventor： Wanli MIN , Jiawei WANG , Zhenggang WANG
Abstract: Embodiments of the present disclosure can provide a road traffic analysis method and an apparatus. The method can comprise obtaining a traffic parameter of a road intersection by analyzing road traffic information of the road intersection, determining a reference adjustment length for each phase of a traffic signal cycle corresponding to each lane of the road intersection based on the road traffic information and the traffic parameter. The traffic signal cycle has one or more phases. The method can also comprise determining a first adjustment length when a difference between the reference adjustment length and the first adjustment length satisfies a condition associated with the lanes of the road intersection and the corresponding traffic parameter, and adjusting the phases of the traffic light cycle at the road intersection based on the first adjustment length for each phase.
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公开(公告)号：US20200184810A1
公开(公告)日：2020-06-11
申请号：US16788106
申请日：2020-02-11
Inventor： Weili SUN , Xianghong LIU , Jianfeng ZHENG , Jinqing ZHU
Abstract: A method for controlling traffic lights is provided. The method may include obtaining historical track data of a plurality of vehicles. The method may include obtaining a congestion period. The method may include determining a discharge speed during the congestion period based on a portion of the historical track data corresponding to the congestion period. The method may further include determining an offset value based on a length of the road, the discharge speed, a cycle length of a first traffic light at the downstream intersection, a cycle length of a second traffic light at the upstream intersection, and a time length of a green light of the second traffic light being lit, and determining a signal timing of the second traffic light based on the offset value.
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Patent Agency Ranking
6.发明申请公开(公告)号：US20180286228A1
公开(公告)日：2018-10-04
申请号：US15473053
申请日：2017-03-29
Applicant: HERE Global B.V.
Inventor： Jingwei Xu , Bruce Bernhardt , Arnold Sheynman , Xin Gao
IPC: G08G1/082
CPC classification number: G08G1/082 , G08G1/0112 , G08G1/0129 , G08G1/0145 , G08G1/07
Abstract: A method is provided for controlling traffic lights of a road geometry network using a cloud-based traffic control system. Methods may include: receiving map data including road network geometry and traffic light locations relative to intersections of the road network geometry; receiving signal phase and timing of traffic lights at the traffic light locations; receiving probe and sensor data from a plurality of probes traversing the road network geometry; analyzing the received probe and sensor data from the plurality of probes relative to the road network geometry and the traffic light locations; determining revised signal phase and timing for at least one traffic light within the road network geometry based on the analyzed probe and sensor data relative to the road network geometry and the traffic light locations; and providing revised signal phase and timing to the at least one traffic light within the road network geometry.
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7.发明申请公开(公告)号：US20170148314A1
公开(公告)日：2017-05-25
申请号：US15424976
申请日：2017-02-06
Applicant: TomTom International B.V
Inventor： Paul Gerard Krijger , Stefan Nico Anton Bollars
CPC classification number: G08G1/0145 , G08G1/0129 , G08G1/082 , G08G1/096 , G08G1/096716 , G08G1/096741 , G08G1/096827 , G08G1/096844
Abstract: Data indicative of the durations of multiple instances of different phases of a traffic control signal in a given time period is determined. The data is used to obtain data indicative of a distribution of the durations of each phase. The distribution data is used to obtain data indicative of a probability of the traffic control signal having a given phase at one or more future time. The probability data may be used to provide an expected waiting time when arriving at the signal at a future time and/or a speed recommendation for a vehicle approaching the signal.
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公开(公告)号：US5959553A
公开(公告)日：1999-09-28
申请号：US735335
申请日：1996-10-22
Applicant: Subhash C. Raswant
Inventor： Subhash C. Raswant
Abstract: A method of controlling traffic signals on existing grid-like systems of avenues and crossing streets. Two phase traffic signals, red and green, wherein both phases are equal in duration and the amber interval is a part of the green interval. The coordinated two-dimensional progression traffic signal system requires simultaneous changes of the signal cycle at three levels of the designated grid plan. The duration of each phase of the signal cycle is determined by the time required to traverse two contiguous lengths of the optimum grid rectangle. A band length is determinable from the calculation of the duration of the phases and corresponds to the integral number of roadway intersections to be crossed by a vehicle. Between bands, adjacent band widths are in the reciprocal phase from one another. Between avenues, parallel band widths on adjacent avenues and streets are also in reciprocal phases from one another, and between interphases. Interfacing band ends are also in a reciprocal phasing sequence relation to one another, so as to produce a checkerboard pattern of alternating red and green phases of the traffic signals, shown in band interfaces mesh into one another in a saw tooth pattern..
Abstract translation: 一种控制现有网格系统路口和交叉街道交通信号的方法。 两相交通信号红色和绿色，其中两个相位的持续时间相等，琥珀色间隔是绿色区间的一部分。 协调的二维进程交通信号系统需要在指定的电网计划的三个层次上同时改变信号周期。 信号周期的每个相位的持续时间由穿过最佳网格矩形的两个相邻长度所需的时间决定。 带长度可以从相位的持续时间的计算确定，并且对应于车辆要越过的道路交叉点的整数。 在带之间，相邻带宽彼此处于倒数相位。 在大道之间，相邻街道和街道上的平行带宽也是彼此相互间的相位和相互间的相位。 接口带的端部也是互相的相位序列关系，从而产生交替信号的交替的红色和绿色相位的棋盘图案，如带状界面所示，以锯齿形式彼此啮合。
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公开(公告)号：US4462031A
公开(公告)日：1984-07-24
申请号：US460117
申请日：1983-01-21
Applicant: Wilbur E. Johnson
Inventor： Wilbur E. Johnson
CPC classification number: G08G1/082
Abstract: A synchronization device for the control of an automobile traffic signal in synchronization with other traffic signals in the system. A present time clock in the device operates from the local alternating current power source. The synchronization device calculates the time difference between the present time and a daily re-synchronization time, divides that time difference by the length of the operating cycle of traffic signal, and generates a synchronization pulse whenever the residue of the division is zero. An offset or time-delay is added to the synchronization pulse and the traffic signal is operated in response to the delayed synchronization pulse so as to operate with the desired time delay in coordination with the other signals in the system.
Abstract translation: 一种同步装置，用于与系统中的其他交通信号同步地控制汽车交通信号。 设备中的当前时钟从本地交流电源操作。 同步装置计算当前时间和每日重新同步时间之间的时间差，将该时间差除以交通信号的操作周期的长度，并且每当分割的余数为零时产生同步脉冲。 偏移或时间延迟被添加到同步脉冲中，并且业务信号响应于延迟的同步脉冲而被操作，以便与系统中的其他信号协调地以期望的时间延迟进行操作。
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公开(公告)号：US4167784A
公开(公告)日：1979-09-11
申请号：US843730
申请日：1977-10-19
Applicant: Marshall B. McReynolds , Jack D. Van Tilbury
Inventor： Marshall B. McReynolds , Jack D. Van Tilbury
Abstract: Apparatus and method for controlling a plurality of traffic signal lights at a plurality of intersections along a roadway for operation in an average mode for substantially equally favoring traffic flow in each of two directions.
Abstract translation: 用于控制沿着道路的多个交叉点处的多个交通信号灯的装置和方法，以在平均模式下操作，以基本上同样地支持两个方向中的每一个中的交通流量。
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