1. Japan Trucking Association. Current status and tasks of the trucking industry in Japan [in Japanese]. 2018. http://www.jta.or.jp/coho/yuso_genjyo/yuso_genjo2018.pdf
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3. Working Conditions, Fatigue, and Sleep of Truck Drivers (2nd report): An Analysis of Cases of Fatigue and Related Factors in Long-haul Truck Drivers;H Oyama;J Sci Labour,2011
4. Injury severities of truck drivers in single- and multi-vehicle accidents on rural highways;F Chen;Accid Anal Prev,2011
5. Ministry of Land, Infrastructure, Transport and Tourism. Report of the study group on analyzing factors of traffic accidents in motor truck transportation business [in Japanese]. 2017. http://www.mlit.go.jp/jidosha/anzen/03analysis/resourse/data/20170224.pdf