Method and system for route calculation that avoids railroad...

Details Method and system for route calculation that avoids railroad... Method and system for route calculation that avoids railroad...

2008-07-15

2008-07-15

Beaulieu, Yonel (Department: 3661)

Data processing: vehicles, navigation, and relative location

Navigation

Employing position determining equipment

C340S995240

Reexamination Certificate

active

07400972

ABSTRACT:
A navigation system provides information about railroad crossing locations. A geographic database used by the navigation system includes data that indicate whether an at-grade railroad crossing is located along a road segment. Using this information, a route calculation function in the navigation system calculates a route to a destination that avoids road segments that have at-grade railroad crossings. In this way, the delays associated with waiting for a train to cross a road are avoided.

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