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ISSN 1822-427X print
ISSN 1822-4288 online



"The Baltic Journal of Road and Bridge Engineering"
Vilnius: Technika, 2007, Vol II, No 1, p. 5–11.

Alfredas Laurinavičius, Donatas Čygas, Kęstutis Čiuprinskas, Lina Juknevičiūtė
Data Analysis and Evaluation of Road Weather Information System Integrated in Lithuania
The Lithuanian climatic conditions set high requirements for road and street maintenance in winter. In our country, the air temperature is below zero for 3–4 months per year. The longest period of this temperature is in eastern Lithuania, and the shortest period is in the coastal area. On average, the first snow cover forms from the middle of November and remains until the middle of March. Moreover, in winter thaws are frequent in Lithuania and the temperature fluctuates around zero. There is also high probability of glazed frost, freezing rain and fog.
In most European countries road weather information systems have been established. The aim of these systems is to reduce the road maintenance costs in winter, to ensure good traffic safety, to inform drivers about poor traffic conditions. The following main components make up the integrated road weather information system: a) spatial analysis of the road microclimate to produce temperature graphs; b) road pavement and atmospheric characteristics’ sensors providing information on the actual weather conditions on the roads; c) computer and information network.
The road engineer receives all information in a form which enables to use it quickly and take necessary actions. It also enables to collect external data on the weather conditions, which, upon its statistical analysis, can be used for road design, construction, repair and maintenance.
Keywords: climate, meteorological station, road weather information station.

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