著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL National Research Council (U.S.). Transportation Research Board,"Traffic control devices, visibility, and highway-rail grade crossings",,Transportation Research Board of the National Academies,2008,Transportation research record,,"9780309113274,9780309142519,9780309142809,9780309167703,9780309223348,9780309287012",,https://cir.nii.ac.jp/crid/1130000795246745216