Based on the fact that road conditions become hazardous in the winter in Hokkaido, Tohoku region, Hokuriku region, and Shinetsu region, this system applies to taxis which are operated in the specific areas of these regions only during midwinter all day.
北海道や東北、北陸信越地方などで、冬季の道路状況が劣悪になることに鑑みて、特定の地域を走行するタクシーにおいて、厳冬期間に限って終日加算される運賃。