著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) Saman Roshandel and Zuduo Zheng and Simon Washington,Impact of real-time traffic characteristics on freeway crash occurrence: Systematic review and meta-analysis,Accident Analysis & Prevention,0001-4575,Elsevier BV,2015-06,79,,198-211,https://cir.nii.ac.jp/crid/1361699996480154752,https://doi.org/10.1016/j.aap.2015.03.013