Field of view traffic signal preemption
AssigneeGlobal Traffic Technologies, LLC
InventorKevin Clare Eichhorst
Life of this patent
Estimating the term…
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.
Claims20
A method for issuing preemption requests, comprising:
- determining, by an on-vehicle circuit arrangement, a location and a heading of a vehicle;
- calculating, by a processor of the on-vehicle circuit arrangement, coordinates that define 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.
An on-vehicle system for issuing traffic signal preemption requests, comprising:
- 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;
- calculate coordinates that define boundaries 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.
A method for issuing preemption requests, comprising:
- repeatedly calculating by a processor of an on-vehicle circuit arrangement, coordinates that define 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.
An apparatus for issuing preemption requests, comprising:
- means for repeatedly calculating coordinates that define 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.
Dependencies are inferred from the claim text.