Urapa, P., Jamradloedluk, J., Homvutivong, S. and Satiennam, W. (2014) “Effectiveness of Motorcycle speed controlled by speed hump”, Engineering and Applied Science Research, 41(3), pp. 313–320. available at: https://ph01.tci-thaijo.org/index.php/easr/article/view/22506 (accessed: 23 September 2026).