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公开(公告)号:US08279086B2
公开(公告)日:2012-10-02
申请号:US12567449
申请日:2009-09-25
申请人: Xianghong Liu , Wenteng Ma , Xinkai Wu
发明人: Xianghong Liu , Wenteng Ma , Xinkai Wu
IPC分类号: G08G1/08
CPC分类号: G08G1/01 , G08G1/0104 , G08G1/08 , G08G1/081 , G08G1/082
摘要: A method and system are provided for determining travel time through intersections by assigning an initial position for a virtual probe in the intersection and updating the position and velocity for the virtual probe such that the position and velocity of the virtual probe are determined multiple times from a time when the virtual probe is at an initial position until the time when the updated position of the virtual probe is past a stop line at the intersection. Updating the position and velocity of the virtual probe involves retrieving vehicle detection data and traffic control signal data to determine a distance from the virtual probe to the closer of a stop line and a vehicle in a queue in front of the virtual probe. The length of the queue is determined using the intersection of two shockwaves.
摘要翻译: 提供了一种方法和系统,用于通过在交叉点中分配虚拟探针的初始位置来确定交叉点的行进时间,并更新虚拟探针的位置和速度,使得虚拟探针的位置和速度从 当虚拟探针处于初始位置直到虚拟探针的更新位置在交叉路口处超过停止线的时间为止。 更新虚拟探针的位置和速度涉及检索车辆检测数据和交通控制信号数据,以确定从虚拟探针到虚拟探测器前面的队列中的停止线和车辆的更近处的距离。 使用两个冲击波的交点来确定队列的长度。
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公开(公告)号:US20100079306A1
公开(公告)日:2010-04-01
申请号:US12567449
申请日:2009-09-25
申请人: Xianghong Liu , Wenteng Ma , Xinkai Wu
发明人: Xianghong Liu , Wenteng Ma , Xinkai Wu
CPC分类号: G08G1/01 , G08G1/0104 , G08G1/08 , G08G1/081 , G08G1/082
摘要: A method and system are provided for determining travel time through intersections by assigning an initial position for a virtual probe in the intersection and updating the position and velocity for the virtual probe such that the position and velocity of the virtual probe are determined multiple times from a time when the virtual probe is at an initial position until the time when the updated position of the virtual probe is past a stop line at the intersection. Updating the position and velocity of the virtual probe involves retrieving vehicle detection data and traffic control signal data to determine a distance from the virtual probe to the closer of a stop line and a vehicle in a queue in front of the virtual probe. The length of the queue is determined using the intersection of two shockwaves.
摘要翻译: 提供了一种方法和系统,用于通过在交叉点中分配虚拟探针的初始位置来确定交叉点的行进时间,并更新虚拟探针的位置和速度,使得虚拟探针的位置和速度从 当虚拟探针处于初始位置直到虚拟探针的更新位置在交叉路口处超过停止线的时间为止。 更新虚拟探针的位置和速度涉及检索车辆检测数据和交通控制信号数据,以确定从虚拟探针到虚拟探测器前面的队列中的停止线和车辆的更近处的距离。 使用两个冲击波的交点来确定队列的长度。
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