Roadway systems and methods for conditionally transmitting a radio signal to vehicles, depending on whether a certain person is in the area
First Claim
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1. A method for warning a vehicle approaching a changeable road sign, the method comprising:
- receiving an identification signal from a device carried by a human having a medical condition, at a time when the human is in the vicinity of the changeable road sign;
demodulating the identification signal into a digital signal;
comparing the digital signal to a data structure associated with the changeable road sign, the data structure indicating a plurality of medical conditions;
determining if the digital signal indicates a medical condition indicated by the data structure;
depending on a result of the determining step, conditionally causing the changeable road sign to display the medical condition indicated by the digital signal; and
depending on the result of the determining step, conditionally transmitting a radio warning signal to the vehicle, the radio warning signal indicating the medical condition indicated by the digital signal.
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Accused Products
Abstract
Disclosed are alert systems and methods for a roadway. According to one exemplary method, there is a step of receiving an identification signal from a device carried by a human having a medical condition. Subsequently, circuitry acts to conditionally cause a changeable road sign to display the medical condition, and conditionally transmit a radio warning signal to a vehicle, the radio warning signal indicating the medical condition.
28 Citations
1 Claim
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1. A method for warning a vehicle approaching a changeable road sign, the method comprising:
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receiving an identification signal from a device carried by a human having a medical condition, at a time when the human is in the vicinity of the changeable road sign; demodulating the identification signal into a digital signal; comparing the digital signal to a data structure associated with the changeable road sign, the data structure indicating a plurality of medical conditions; determining if the digital signal indicates a medical condition indicated by the data structure; depending on a result of the determining step, conditionally causing the changeable road sign to display the medical condition indicated by the digital signal; and depending on the result of the determining step, conditionally transmitting a radio warning signal to the vehicle, the radio warning signal indicating the medical condition indicated by the digital signal.
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Specification
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Current AssigneeInternational Business Machines Corporation
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Original AssigneeInternational Business Machines Corporation
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InventorsJohnson, Randy S., Northway, Tedrick N.
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Primary Examiner(s)Bugg; George
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Assistant Examiner(s)Tang; Son M
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Application NumberUS12/111,762Time in Patent Office273 DaysField of Search340435-436, 340/901, 340903-905, 340916-919, 340/925, 116/63.R, 701/117US Class Current340/925CPC Class CodesG08G 1/07 Controlling traffic signalsG08G 1/0962 having an indicator mounted...
