发明名称 |
Traffic flow monitoring for intersections with signal controls |
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. |
申请公布号 |
US8279086(B2) |
申请公布日期 |
2012.10.02 |
申请号 |
US20090567449 |
申请日期 |
2009.09.25 |
申请人 |
LIU XIANGHONG;MA WENTENG;WU XINKAI;REGENTS OF THE UNIVERSITY OF MINNESOTA |
发明人 |
LIU XIANGHONG;MA WENTENG;WU XINKAI |
分类号 |
G08G1/08 |
主分类号 |
G08G1/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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