Reduce speed ahead information delivery
First Claim
1. A method, comprising:
- determining a position of a vehicle on a segment of a roadway over which the vehicle is currently travelling;
identifying a change in speed limit for a segment of the roadway that the vehicle is approaching relative to the current segment of the roadway;
assessing speed limit information of the current segment of the roadway and the approaching segment of the roadway;
determining a speed limit information presentation zone of the current segment of the roadway within which speed limit information for the approaching segment of the roadway is to be presented to a driver of the vehicle after determining that a speed limit of the approaching segment of the roadway is lower than at least one of a speed limit of the current segment of the roadway and a current speed of the vehicle;
assessing a position of the vehicle relative to the speed limit information presentation zone;
determining a speed limit warning zone on the roadway within which a notification indicating that the current speed of the vehicle is greater than the speed limit of the approaching segment of the roadway is presented to the driver, the speed limit warning zone having a warning notification distance, defining a distance at which the driver is initially notified of the change in speed limit, that is a function of the current speed of the vehicle, the speed limit for the approaching segment of the roadway and a vehicle deceleration factor including a measured deceleration of the vehicle corresponding to an actual deceleration of the vehicle at a point in time such that the measured deceleration of the vehicle influences a magnitude of the warning notification distance;
assessing the position of the vehicle relative to the speed limit warning zone; and
providing the speed limit information for the approaching segment of the roadway to the driver in response to determining that the vehicle is within the speed limit information presentation zone.
1 Assignment
0 Petitions
Accused Products
Abstract
A navigation system provides a position of the vehicle on a segment of a roadway and identifies a change in speed limit relative to the current segment of the roadway. A traffic sign recognition system determines a speed limit information presentation zone of the current segment of the roadway after determining that a speed limit of the approaching segment of the roadway is lower than a speed limit of the current segment of the roadway and/or a current speed of the vehicle. Thereafter, the traffic sign recognition system assesses the position of the vehicle relative to the speed limit information presentation zone. In response to determining that the vehicle is within the speed limit information presentation location, the traffic sign recognition system displays a visual representation of a speed limit sign designating the speed limit of the approaching segment of the roadway.
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Citations
19 Claims
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1. A method, comprising:
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determining a position of a vehicle on a segment of a roadway over which the vehicle is currently travelling; identifying a change in speed limit for a segment of the roadway that the vehicle is approaching relative to the current segment of the roadway; assessing speed limit information of the current segment of the roadway and the approaching segment of the roadway; determining a speed limit information presentation zone of the current segment of the roadway within which speed limit information for the approaching segment of the roadway is to be presented to a driver of the vehicle after determining that a speed limit of the approaching segment of the roadway is lower than at least one of a speed limit of the current segment of the roadway and a current speed of the vehicle; assessing a position of the vehicle relative to the speed limit information presentation zone; determining a speed limit warning zone on the roadway within which a notification indicating that the current speed of the vehicle is greater than the speed limit of the approaching segment of the roadway is presented to the driver, the speed limit warning zone having a warning notification distance, defining a distance at which the driver is initially notified of the change in speed limit, that is a function of the current speed of the vehicle, the speed limit for the approaching segment of the roadway and a vehicle deceleration factor including a measured deceleration of the vehicle corresponding to an actual deceleration of the vehicle at a point in time such that the measured deceleration of the vehicle influences a magnitude of the warning notification distance; assessing the position of the vehicle relative to the speed limit warning zone; and providing the speed limit information for the approaching segment of the roadway to the driver in response to determining that the vehicle is within the speed limit information presentation zone. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A vehicle, comprising:
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a navigation system configured to provide a position of the vehicle on a segment of a roadway over which the vehicle is currently travelling and identify a change in speed limit for a segment of the roadway that the vehicle is approaching relative to the current segment of the roadway; and a traffic sign recognition system configured to determine a speed limit information presentation zone of the current segment of the roadway within which speed limit information for the approaching segment of the roadway is to be presented to a driver of the vehicle after determining that a speed limit of the approaching segment of the roadway is lower than at least one of a speed limit of the current segment of the roadway and a current speed of the vehicle;
whereinthe traffic sign recognition system is configured to determine a speed limit warning zone on the roadway within which a warning notification indicating that the current speed of the vehicle is greater than the speed limit of the approaching segment of the roadway is to be presented to the driver, the speed limit warning zone having a warning notification distance, defining a distance at which the driver is initially notified of the change in speed limit, that is a function of the current speed of the vehicle, the speed limit of the approaching segment of the roadway and a vehicle deceleration factor including a measured deceleration of the vehicle corresponding to an actual deceleration of the vehicle at a point in time such that the measured deceleration of the vehicle influences a magnitude of the warning notification distance; and
whereinthe traffic sign recognition system is configured to assess the position of the vehicle relative to the speed limit information presentation zone, and display a visual representation of a speed limit sign designating the speed limit of the approaching segment of the roadway in response to determining that the vehicle is within the speed limit information presentation zone. - View Dependent Claims (9, 10, 11, 12)
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13. A processor-readable medium having tangibly embodied thereon and accessible therefrom a set of instructions interpretable by at least one data processing device, the processor-readable medium being non-transitory, and the set of instructions configured for causing the at least one data processing device to carry out operations for:
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determining a position of a vehicle on a segment of a roadway over which the vehicle is currently travelling; identifying a change in speed limit for a segment of the roadway that the vehicle is approaching relative to the current segment of the roadway; assessing speed limit information of the current segment of the roadway and the approaching segment of the roadway; determining a speed limit information presentation zone of the current segment of the roadway within which speed limit information for the approaching segment is to be presented to a driver of the vehicle after determining that a speed limit of the approaching segment of the roadway is lower than at least one of a speed limit of the current segment of the roadway and a current speed of the vehicle; assessing a position of the vehicle relative to the speed limit information presentation zone; determining a speed limit warning zone on the roadway within which a warning notification indicating that the current speed of the vehicle is greater than the speed limit of the approaching segment of the roadway is to be provided to the driver, the speed limit warning zone having a warning notification distance, defining a distance at which the driver is initially notified of the change in seed limit, that is a function of the current speed of the vehicle, the speed limit of the approaching roadway and a deceleration factor including a measured deceleration of the vehicle corresponding to an actual deceleration of the vehicle at a point in time such that the measured vehicle deceleration influences a magnitude of the warning notification distance; assessing the position of the vehicle relative to the speed limit warning zone; causing the warning notification to be provided to the driver in response to determining that the vehicle is within the speed limit warning zone; and causing the speed limit information for the approaching segment of the roadway to be presented to the driver in response to determining that the vehicle is within the speed limit information presentation zone. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification