IOT Based Railway Track Clearance Alert System . International Research Journal on Advanced Engineering Hub (IRJAEH), [S. l.], v. 4, n. 02, p. 686–691, 2026. DOI: 10.47392/IRJAEH.2026.0096. Disponível em: https://irjaeh.com/index.php/journal/article/view/1327.. Acesso em: 18 jul. 2026.