发明名称 |
Systems and methods for estimating traffic signal information |
摘要 |
Systems and methods for estimating traffic signal information are provided. According to one aspect, positioning system data is obtained from a plurality of vehicles. Each data set includes the position and the velocity of a vehicle as functions of time. For an intersection having a traffic signal, an average acceleration of the vehicles when leaving the intersection is estimated, and an average deceleration of the vehicles when approaching the intersection is estimated. For each of a subset of the vehicles, a stop duration at the intersection is estimated based on the average acceleration, the average deceleration, and the positioning system data for the respective vehicle. A duration of a red phase of the traffic signal is estimated based on the stop duration of each of the subset of the vehicles. |
申请公布号 |
US9183743(B2) |
申请公布日期 |
2015.11.10 |
申请号 |
US201314068791 |
申请日期 |
2013.10.31 |
申请人 |
Bayerische Motoren Werke Aktiengesellschaft |
发明人 |
Vahidi Ardalan;Fayazi S. Alireza;Mahler Grant;Winckler Andreas |
分类号 |
G08G1/01 |
主分类号 |
G08G1/01 |
代理机构 |
Crowell & Moring LLP |
代理人 |
Crowell & Moring LLP |
主权项 |
1. A method of estimating traffic signal information and adjusting an operation of an on-board system of a vehicle, the method comprising:
obtaining positioning system data from each of a plurality of vehicles, wherein said positioning system data for each of the plurality of vehicles comprises position and velocity of a vehicle as functions of time; for an intersection having a traffic signal, estimating an average acceleration of the vehicles when leaving the intersection and an average deceleration of the vehicles when approaching the intersection; for each of a subset of the vehicles, estimating a stop duration at the intersection based on an estimated stop time, an estimated start time, the average acceleration, the average deceleration, and the positioning system data for the respective vehicle; removing vehicles from the subset for which the estimated stop time is greater than the estimated start time; estimating a duration of a red phase of the traffic signal based on the stop duration of each of the subset of the vehicles; and adjusting the operation of the on-board system of the vehicle based, at least in part, on the estimated red phase of the traffic signal. |
地址 |
Munich DE |