RADIO FREQUENCY SIGNAL BASED TRAFFIC LIGHT CONTROL SYSTEM FOR EMERGENCY VEHICLES. International Journal of Engineering and Science Research, [S. l.], v. 12, n. 2, p. 1–25, 2022. Disponível em: https://ijesr.org/index.php/ijesr/article/view/1094. Acesso em: 15 oct. 2025.