Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) INADA Ryuichi and Rahman Mursheda and KOJIMA Aya and KUBOTA Hisashi,Relationship between Shape of Slope and Speed Reduction Effect of Sinusoidal Hump,JSTE Journal of Traffic Engineering,2187-2929,Japan Society of Traffic Engineers,2020-02-01,6,2,A_206-A_215,https://cir.nii.ac.jp/crid/1390565134826058496,https://doi.org/10.14954/jste.6.2_a_206