Communications: electrical – External condition vehicle-mounted indicator or alarm – Highway information
Reexamination Certificate
2008-07-15
2008-07-15
Trieu, Van T. (Department: 2612)
Communications: electrical
External condition vehicle-mounted indicator or alarm
Highway information
C340S580000, C340S581000
Reexamination Certificate
active
07400267
ABSTRACT:
Methods for determining need for treating a vehicle travel surface include sensing, at a first time, a characteristic of a vehicle travel surface from a mobile sensor. Sensed characteristics include temperature, friction coefficient, material volumetric buildup, e.g., composition, such as an amount or percentage of ice or snow, density, depth, freeze point and chemical concentrations. The sensed characteristic is recorded as a first measurement in a database, and GIS information correlating a location with the first measurement is attached. The characteristic of the vehicle travel surface is sensed at a second time, at the location, and recorded in the database, for example as a second measurement. GIS information correlating the location with the second measurement may be attached, and the first and second measurements compared.
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Doherty John A.
Kalbfleisch Charles A.
Lathrop & Gage LC
Trieu Van T.
Western Strategic Products, LLC
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