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 July 18, 2024. https://penerbit.uthm.edu.my/periodicals/index.php/eeee/article/view/87.