Hokkaido, the northernmost of Japan's four major islands, often suffers from snowstorm-induced poor visibility or snowdrifts. Researchers at Civil Engineering Research Institute of Hokkaido (CERI) developed techniques for estimating visibility distances on the basis of meteorological data. In 2013, the Snowstorm Visibility Information Services system began providing forecasts of highway visibility in Hokkaido (originally through a website, and later through a smart phone application that included a feature where users could check the visibility at their current geolocation).
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