TRAFFIC CONTROL DEVICE DETECTION
First Claim
Patent Images
1. A vehicle system comprising:
- a speed sensor configured to measure a speed of a host vehicle; and
a processing device programmed to compare the speed to a speed threshold and determine an amount of time the speed is below the speed threshold;
wherein the processing device is programmed to detect a presence of a traffic control device based on the amount of time the speed is below the speed threshold.
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Abstract
An example vehicle system includes a speed sensor that measures a speed of a host vehicle and a processing device programmed to compare the speed to a speed threshold and determine an amount of time the speed is below the speed threshold. The processing device detects the presence of a traffic control device based on the amount of time the speed is below the speed threshold.
6 Citations
20 Claims
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1. A vehicle system comprising:
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a speed sensor configured to measure a speed of a host vehicle; and a processing device programmed to compare the speed to a speed threshold and determine an amount of time the speed is below the speed threshold; wherein the processing device is programmed to detect a presence of a traffic control device based on the amount of time the speed is below the speed threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method comprising:
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measuring a speed of a host vehicle; comparing the speed to a speed threshold; determining an amount of time the speed is below the speed threshold; and detecting a presence of a traffic control device based on the amount of time the speed is below the speed threshold. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A vehicle system comprising:
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a speed sensor configured to measure a speed of a host vehicle; a processing device programmed to compare the speed to a speed threshold and determine an amount of time the speed is below the speed threshold; and a navigation system programmed to determine a location of the host vehicle; wherein the processing device is programmed to detect a presence of a traffic control device based on the amount of time the speed is below the speed threshold, determine a location of the traffic control device based on the location of the host vehicle, determine a type of traffic control device based on a recent maximum speed of the host vehicle, and store the presence and type of traffic control device in a location database.
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Specification