Aleksander Purba, Rahayu Sulistyorini, Agung Ilhami, and Ageng Sadnowo Repelianto. “DESIGN AND IMPLEMENT A MONITORING SYSTEM OF TRAFFIC SIGNAL USING MICROCONTROLLER DEVICES”. GEOMATE Journal 19, no. 72 (August 30, 2020): 62–68. Accessed April 28, 2024. https://geomatejournal.com/geomate/article/view/1120.