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Butte Creek Ice Warning System
Butte Creek
Butte Creek Ice Warning System
The Butte Creek Ice warning system was deployed in November 2005 to actively warn motorists of potentially icy driving conditions along a corridor of OR140.  The system consists of a road weather information system (located at milepost 35) linked to two static signs with flashing beacons (located at mileposts 41.7 and 21.7) warning travelers of icy conditions.  When the threshold conditions (a combination of pavement temperature, humidity and moisture) are met, the flashing beacons will automatically turn on.  Figure 1 shows a distribution of historical crashes along OR140.  This distribution was used to determine the most effective location for this system.  The yellow flags indicate the position of the flashing beacons, and the red tag indicates the location of the RWIS station.
Figure 1.  Crash Distribution along OR 140