Vehicle information system
First Claim
1. A method for collecting traffic information comprising:
- enabling a subset of an available set of probe vehicles to provide traffic related data;
receiving traffic related data from the enabled subset of probe vehicles;
updating a traffic database using the received traffic related data, including updating speed information associated with a plurality of road segments in a road network; and
planning a route through the road network from a starting to a destination location using the speed information associated with the road segments.
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Accused Products
Abstract
A vehicle information system which includes an in-vehicle system 105 and a centralized server system 120. The in-vehicle system communicates with the server system using a wireless communication link 110, such as over a cellular telephone system. A position system, such as a set of GPS satellites 140, provides positioning signals that are used by the in-vehicle systems, and optionally by the centralized server system to increase the accuracy of position estimates. In one version of the system, an operator specifies a destination to an in-vehicle system which validates the destination. The in-vehicle system transmits specification of the destination to a server system 125 at the centralized server. The server system computes a route to the destination and transmits the computed route to the in-vehicle system. The in-vehicle system guides the operator along the route. If the in-vehicle system detects that the vehicle has deviated from the planned route, it replans a new route to the destination using an in-vehicle map database.
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Citations
19 Claims
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1. A method for collecting traffic information comprising:
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enabling a subset of an available set of probe vehicles to provide traffic related data;
receiving traffic related data from the enabled subset of probe vehicles;
updating a traffic database using the received traffic related data, including updating speed information associated with a plurality of road segments in a road network; and
planning a route through the road network from a starting to a destination location using the speed information associated with the road segments. - View Dependent Claims (2, 3, 11, 12, 13, 14, 15, 16, 17)
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4. A method for providing traffic related information to a user comprising:
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at an in-vehicle system, accepting from the user a specification of a path made up of one or more road segments in a road network;
transmitting the specification from the in-vehicle system to a server system;
receiving traffic data related to road segments in the road network, in which the traffic data are derived from traffic related data received from fewer than all of an available set of probe vehicles, the subset of probe vehicles being enabled by the server system to provide the traffic related data; and
if the received traffic data indicates an exceptional traffic condition on the specified path, notifying the user of the traffic condition. - View Dependent Claims (5, 6, 7)
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8. A method of planning a route and providing traffic related information to a user, comprising:
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planning a route through a road network from a starting location to a destination location;
at a server, enabling fewer than all of an available set of probe vehicles on the route to provide traffic related data;
monitoring traffic condition along the route by receiving traffic related data from the subset of enabled vehicles on the route; and
if the received traffic data indicates an exceptional traffic condition on the planned route, notifying the user of the traffic condition. - View Dependent Claims (9, 10)
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18. A method of planning a route and providing traffic related information to a user, comprising:
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planning a route through a road network from a starting location to a destination location;
enabling a subset of an available set of probe vehicles to provide traffic related data, includes enabling vehicles according to a likelihood that they are on the planned route;
monitoring traffic condition along the route by receiving traffic related data from the enabled vehicles on the route; and
if the received traffic data indicates an exceptional traffic condition on the planned route, notifying the user of the traffic condition. - View Dependent Claims (19)
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Specification