Figure 2 from FULLY DIGITALIZED ATC (AUTOMATIC TRAIN CONTROL) SYSTEM OF INTEGRATED FUNCTIONS OF TRAIN-PROTECTION AND INTERLOCKING | Semantic Scholar
Train Autonome | Voie Libre
ETCS Levels and Modes - European Commission
Western Railway on X: "The indigenous Automatic Train Protection (ATP) system developed by Indian Railways is known as Kavach (TCAS: Train Collision Avoidance system). The system has been developed indigenously by RDSO
Automatic protection across electrified rail network - Rail Express