P.Mariaraja, R.Charan, M.Harish, and B.Soundhar. “AUTOMATIC TRAFFIC SIGNAL CONTROLLER USING ARDUINO”. EPRA International Journal of Research and Development (IJRD), vol. 8, no. 2, Feb. 2023, pp. 38-42, http://www.eprajournals.net/index.php/IJRD/article/view/1474.