Intersection phase map
First Claim
1. A method comprising:
- receiving, at a server, one or more reports from at least one information source, each respective report comprising source data indicative of one or more aspects of a plurality of objects at or proximate to a road intersection being approached by a vehicle at a respective time, wherein the plurality of objects include at least a traffic signal controlling traffic through the road intersection;
storing at least the source data from the one or more reports at the server;
constructing a phase map for the road intersection from at least the source data using the server, wherein the phase map represents a current status of the plurality of objects relative to the road intersection and a prediction of future status of the plurality of objects relative to the road intersection at one or more future times, wherein the prediction of future status of the traffic signal includes indicating a beginning time and an end time between which the traffic signal will di splay a particular color;
determining that, for the traffic signal controlling traffic through the road intersection, a drift has occurred between two consecutive days in the beginning time at which the traffic signal will display the particular color;
determining an amount of the drift in the beginning time between two consecutive days;
determining a level of certainty for the prediction of future status of the plurality of objects including the traffic signal, wherein the level of certainty is based at least on the determined amount of drift;
receiving, at the server, an information request by the vehicle related to the road intersection;
in response to the information request, the server generating, based on the phase map, an information response including the current status of the plurality of objects relative to the road intersection, the prediction of future status of the plurality of objects relative to the road intersection at a specified time at which the vehicle reaches the road intersection, and the level of certainty; and
sending the information response from the server to the vehicle.
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Accused Products
Abstract
Methods and apparatus are disclosed for providing information about road features. A server can receive reports from information sources associated with a road feature that can include a road intersection. Each report can include source data obtained at a respective time. The source data from the reports can be stored at the server. The server can construct a phase map, where the phase map is configured to represent a status of the road feature at one or more times. The server can receive an information request related to the road feature at a specified time. In response to the information request, the server can generate an information response including a prediction of a status related to the road feature at the specified time. The prediction can be provided by the phase map and is based on information request. The information response can be sent from the server.
13 Citations
12 Claims
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1. A method comprising:
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receiving, at a server, one or more reports from at least one information source, each respective report comprising source data indicative of one or more aspects of a plurality of objects at or proximate to a road intersection being approached by a vehicle at a respective time, wherein the plurality of objects include at least a traffic signal controlling traffic through the road intersection; storing at least the source data from the one or more reports at the server; constructing a phase map for the road intersection from at least the source data using the server, wherein the phase map represents a current status of the plurality of objects relative to the road intersection and a prediction of future status of the plurality of objects relative to the road intersection at one or more future times, wherein the prediction of future status of the traffic signal includes indicating a beginning time and an end time between which the traffic signal will di splay a particular color; determining that, for the traffic signal controlling traffic through the road intersection, a drift has occurred between two consecutive days in the beginning time at which the traffic signal will display the particular color; determining an amount of the drift in the beginning time between two consecutive days; determining a level of certainty for the prediction of future status of the plurality of objects including the traffic signal, wherein the level of certainty is based at least on the determined amount of drift; receiving, at the server, an information request by the vehicle related to the road intersection; in response to the information request, the server generating, based on the phase map, an information response including the current status of the plurality of objects relative to the road intersection, the prediction of future status of the plurality of objects relative to the road intersection at a specified time at which the vehicle reaches the road intersection, and the level of certainty; and sending the information response from the server to the vehicle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification