United States Department of Transportation
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Pikalert VDT Enhancements, Operations, & Maintenance
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2017-03-24
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[PDF-1.34 MB]
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Edition:Final Report - 9/25/2015 - 3/24/2015
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Abstract:The Pikalert System provides high precision road weather guidance. It assesses current weather and road conditions based on observations from connected vehicles, road weather information stations, radar, and weather model analysis fields. It also forecasts future weather and road conditions out to 72 hours utilizing information from numerical weather models. As connected vehicle observations become more and more prevalent with the advent of autonomous vehicles, Pikalert has been designed to utilize these observations effectively. In particular, a number of quality check algorithms have been incorporated to guarantee that erroneous observations are flagged and eliminated. Pikalert then assembles the observations that have passed the quality checks, associates them with the appropriate road segments, and then uses them in assessing the road segment weather conditions. Detailed reports can then be generated characterizing the status of the various road segments assuming there is adequate connected vehicle coverage. Pikalert advises users of the presence of three conditions (precipitation, road surface, and visibility) and will make pavement treatment recommendations for snow and ice removal. Pikalert recommendations are made available through web-based technology that supports browser-based displays and smartphones. The software for the Pikalert System can be downloaded from the Open Source Application Development Portal (OSADP) at www.itsforge.net. Download the files associated with Pikalert-5.0 which includes the code, instructions, libraries, and sample files. The Pikalert System is a licensed open source distribution. For the good of the road weather community, any changes made to the software, particularly the algorithms, we request that any changes be deployed to the OSADP for others to use.
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