MINIMAL INFRASTRUCTURE SYSTEM AND METHOD FOR DETERMINING LANE
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United States of America Patent
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Issued Date -
Aug 8, 2013
app pub date -
Jan 28, 2013
filing date -
Feb 2, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The system utilizes a vehicle's knowledge of its own travel speed and the time between the vehicle's intersecting two light beams that issue from the same location. The light beams can be generated using a retro-reflector illuminated by the vehicle itself, or can be generated with a split beam laser or other light source located at the road side. The vehicle detects the two beams and measures the time between the two detections. Using the vehicle travel speed, it is then possible to determine the vehicle's distance from the road side equipment and thus the lane of travel of the vehicle.
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