Patent ID: 9697729
Date: 2017-07-04
CPC Classifications: G08G

Claim:
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; for each of a subset of the vehicles, estimating a start time at which the respective vehicle leaves the intersection based on the positioning system data for the respective vehicle and the average acceleration; wherein the subset of vehicle is determined by: estimating a cycle time of the traffic signal by: adjusting the operation of the on-board system of the vehicle based, at least in part, on an estimated start of a future green phase of the traffic signal.