Road structure – process – or apparatus – Traffic director – Attenuated lane marker type
Reexamination Certificate
2006-11-28
2006-11-28
Addie, Raymond W. (Department: 3671)
Road structure, process, or apparatus
Traffic director
Attenuated lane marker type
C404S014000, C404S094000, C342S070000
Reexamination Certificate
active
07140803
ABSTRACT:
A system and process for detecting a traffic lane boundary before it is potentially violated by a moving vehicle traveling in the lane. Passive RF tags or labels are embedded in a paint stripe running along pavement. A sensor in the vehicle emits an RF signal at a frequency to which the tags or labels are responsive. When the emitted signal is incident on a tag or label with strength indicative of straying of the vehicle from the lane toward incipient violation of the lane boundary defined by the stripe, the tag or label issues a return signal that is received by the sensor for on-board signaling of the potential violation to alter the driver so that corrective action can be taken.
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Cummings Aaron
Cummings Richard
Addie Raymond W.
Boller George L.
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