Lane change alarm for use in a highway vehicle
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United States of America Patent
Stats
-
Aug 22, 2000
Grant Date -
N/A
app pub date -
Nov 5, 1998
filing date -
Nov 5, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A lane change alarm using data for a highway track. A highway track database provides geographical location points for a track of a highway lane. A differential global positioning system (DGPS) receiver provides a vehicle location. A longitudinal track matching code matches the vehicle location against a track location and provides a longitudinal direction and a transverse distance to an alarm gate. The alarm gate indicates an alarm condition unless a lane change signaler is operated for indicating that the lane change is intentional. The highway track database is created using a similar DGPS receiver by determining and recording highway track location points for a selected highway lane while driving on the highway lane.
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