Communications: electrical – External condition vehicle-mounted indicator or alarm – Highway information
Reexamination Certificate
2007-01-16
2007-01-16
Trieu, Van T. (Department: 2612)
Communications: electrical
External condition vehicle-mounted indicator or alarm
Highway information
C340S580000, C340S581000
Reexamination Certificate
active
11273364
ABSTRACT:
A system and apparatus for detecting and evaluating surface conditions on a road surface and atmospheric conditions simultaneously from a vehicle includes a sensor for detecting the presence of deposited material on a road surface, a detector for determining one or more characteristics of the deposited material such as freezing temperature, process means for converting a detected signal and display means for displaying the condition of the road surface, and a sensor for detecting falling precipitation. An embodiment of the present invention includes a remote sensing apparatus which utilizes electromagnetic radiation to sense actual surface material conditions, temperatures, and composition and local atmospheric conditions at the vehicle as it is moving over a travel surface. This information is then processed through a computer in order to determine those additional steps necessary to apply additional materials to the road surface in order to minimize hazardous driving conditions.
REFERENCES:
patent: 4376007 (1983-03-01), Eigenmann
patent: 5603452 (1997-02-01), Hester
patent: 5746539 (1998-05-01), Mara
Doherty John A.
Kalbfleisch Charles A.
Lathrop & Gage LC
Trieu Van T.
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