Mohamad, Khairul Anuar, Ahmad Akmal Aziz, and Afishah Alias. “Obstacle Detection System for Railways Using IoT Sensors ”. Evolution in Electrical and Electronic Engineering 1, no. 1 (October 12, 2020): 57–63. Accessed August 15, 2026. https://periodical.uthm.edu.my/index.php/eeee/article/view/87.