On-board-detectable passive pavement marking
First Claim
Patent Images
1. A detectable passive marking disposed on a roadway pavement surface comprising:
- a material applied to the roadway pavement surface, and one or more passive RF tags enclosed by the material applied to the roadway pavement surface.
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Abstract
Various embodiments of detectable passive markings are disclosed for application to a roadway pavement surface. Also disclosed are a system and method, using the markings, for warning cross-traffic on a roadway not having the right of way at an intersection of approaching traffic on a roadway that has the right-of-way at the intersection.
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Citations
10 Claims
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1. A detectable passive marking disposed on a roadway pavement surface comprising:
- a material applied to the roadway pavement surface, and one or more passive RF tags enclosed by the material applied to the roadway pavement surface.
- View Dependent Claims (2, 3, 4, 5, 6)
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7. A system for warning cross-traffic on a roadway not having the right of way at an intersection of approaching traffic on a roadway that has the right-of-way at the intersection, the system comprising one or more passive RF tags disposed on the roadway having the right-of-way in advance of the intersection, a detector in a vehicle on the roadway having the right-of-way for detecting the one or more passive RF tags, and a radio transmitter in the vehicle on the roadway having the right-of-way for broadcasting a short range radio signal upon detecting the one or more passive RF tags over a range sufficient to be received by a radio receiver in a vehicle that is on the roadway not having the right-of-way and is either stopped at or approaching the intersection.
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8. A method for warning cross-traffic on a roadway not having the right of way at an intersection of approaching traffic on a roadway that has the right-of-way at the intersection, the method comprising:
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in the vehicle on the roadway having the right-of-way, detecting the presence of one or more passive RF tags disposed on the roadway having the right-of-way in advance of the intersection;
and upon detecting the one or more passive RF tags, broadcasting from the vehicle a short range radio signal over a range sufficient to be received by a vehicle that is on the roadway not having the right-of-way and is either stopped at or approaching the intersection. - View Dependent Claims (9, 10)
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Specification