Method and system for obtaining road grade data

Details Method and system for obtaining road grade data Method and system for obtaining road grade data

2006-04-25

2006-04-25

Black, Thomas G. (Department: 3661)

Data processing: vehicles, navigation, and relative location

Navigation

Employing position determining equipment

C701S208000, C701S209000, C701S212000, C701S213000, C340S995180, C340S995240, C340S398100, C340S146200

Reexamination Certificate

active

07035733

ABSTRACT:
A method for collecting data for a geographic database is disclosed. Altitude data are collected using a vehicle traveling in a geographic region. A barometer associated with the vehicle supplies the altitude data. Road grade data along the roads traveled by the vehicle is derived by analyzing the altitude data. The geographic database is updated to indicate the road grade.

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