Safety relevant application of satellite based localisation in transportation with the focus on railways

With the general applicability of satellite based localization systems (GNSS) and satellite based augmentation systems (SBAS) proven the way is paved for safety relevant applications in railways. Secondary lines currently equipped with no or only a not up-to-date train control system can benefit from satellite based train localization like the currently introduced European train control system (ETCS). Thus the efficiency of operation can be increased including the reduction of costs for infrastructure equipment.