Method and apparatus for detecting and responding to an absence of journey-related information
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United States of America Patent
Stats
-
Aug 5, 2003
Grant Date -
May 29, 2003
app pub date -
Nov 26, 2001
filing date -
Nov 26, 2001
priority date (Note) -
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Abstract
In a vehicle equipped with a dedicated short-range two-way communications system to acquire and otherwise participate in a roadway information service, method and apparatus are provided to detect (301) an absence of the availability of such a service and to respond by substituting (302) roadway information from other sources and to provide notice (303) to the driver regarding the absence of realtime service information and/or the present use of substituted roadway information.
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