Ambak K, Hadipramana J, Abas NA, Mohkatar SN, Jani Z. Investigation on Potential of Recycle Plastic Bottles as a Crash Cushion for Road Barrier. IJIE. 2018;10(4). Accessed August 7, 2026. https://journal.uthm.edu.my/index.php/ijie/article/view/2120