Elizabeth Radjawane, Louise, Isak Piter Kalelan, Wona Grace Boro, Virginia Claudia Lao, and Novita Sari. “Impact of vehicle type proportion and speed bump on traffic characteristics and emission”. Engineering and Applied Science Research 53, no. 4 (August 26, 2026): 485–493. accessed September 16, 2026. https://ph01.tci-thaijo.org/index.php/easr/article/view/266694.