Provision of Snowstorm Visibility Information Source Publication Date 11/16/2015 Author Tetsuya Kokubu, Hirotaka Takechi, Yusuke Hrada, Satoshi, Omiya, Masaru Matsuzawa, Yusuke Sakai Publisher Transportation Research Board URL (Defunct URL: http://docs.trb.org/prp/16-2189.pdf)