FIELD OF VIEW TRAFFIC SIGNAL PREEMPTION
First Claim
1. A method for issuing preemption requests, comprising:
- determining, by an on-vehicle circuit arrangement, a location and a heading of a vehicle;
determining, by the on-vehicle circuit arrangement, boundaries of a geo-window in response to the determined location and heading;
determining, by the on-vehicle circuit arrangement, whether or not any one of a plurality of intersections is located within the boundaries of the geo-window;
in response to determining that one of the plurality of intersections is located within the boundaries of the geo-window, transmitting a preemption request from the vehicle to an intersection controller at the one of the plurality of intersections.
5 Assignments
0 Petitions
Accused Products
Abstract
Approaches for issuing preemption requests. The boundaries of a geo-window are repeatedly determined based on locations and headings of a vehicle as the vehicle is traveling along a roadway. The methods and systems determine whether or not any one of a plurality of intersections is located within the boundaries of the geo-window in response to changed boundaries of the geo-window. In response to determining that one of the plurality of intersections is located within the boundaries of the geo-window, a preemption request is transmitted from the vehicle to an intersection controller at the one of the plurality of intersections.
10 Citations
20 Claims
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1. A method for issuing preemption requests, comprising:
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determining, by an on-vehicle circuit arrangement, a location and a heading of a vehicle; determining, by the on-vehicle circuit arrangement, boundaries of a geo-window in response to the determined location and heading; determining, by the on-vehicle circuit arrangement, whether or not any one of a plurality of intersections is located within the boundaries of the geo-window; in response to determining that one of the plurality of intersections is located within the boundaries of the geo-window, transmitting a preemption request from the vehicle to an intersection controller at the one of the plurality of intersections. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An on-vehicle system for issuing traffic signal preemption requests, comprising:
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a receiver configured and arranged to receive a location signal indicating a location of a vehicle; a storage device configured with data that indicate geographical data that identify locations of a plurality of traffic signals; a processor coupled to the receiver and to the storage device, wherein the processor is configured and arranged to; determine a location and a heading of the vehicle in response to the location signal; generate a representation of a geo-window from the location and heading of the vehicle; determine from the stored geographical data whether or not any one of the traffic signals is located within boundaries of the geo-window; and in response to determining that one of the traffic signals is located within the boundaries of the geo-window, generate a preemption request; and a transmitter coupled to the processor, wherein the transmitter is configured and arranged to transmit the preemption request to an intersection controller of the one of the traffic signals. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for issuing preemption requests, comprising:
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repeatedly determining boundaries of a geo-window based on locations and headings of a vehicle as the vehicle is traveling along a roadway; determining whether or not any one of a plurality of intersections is located within the boundaries of the geo-window in response to changed boundaries of the geo-window; and in response to determining that one of the plurality of intersections is located within the boundaries of the geo-window, transmitting a preemption request from the vehicle to an intersection controller at the one of the plurality of intersections.
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20. An apparatus for issuing preemption requests, comprising:
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means for repeatedly determining boundaries of a geo-window based on locations and headings of a vehicle as the vehicle is traveling along a roadway; means for determining whether or not any one of a plurality of intersections is located within the boundaries of the geo-window in response to changed boundaries of the geo-window; and means, responsive to determining that one of the plurality of intersections is located within the boundaries of the geo-window, for transmitting a preemption request from the vehicle to an intersection controller at the one of the plurality of intersections.
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Specification