SNCF Groupe (French Republic 100% controlled) has faced sustained French ART (Autorité de Régulation des Transports) regulatory enforcement scrutiny over alleged inadequate consumer protection compliance at multiple SNCF Voyageurs TGV high-speed rail and TER/Transilien regional rail customer touchpoints including the contested 2024 sustained SNCF Voyageurs TGV customer service quality compliance practices affecting French Republic institutional creditor governance complexity.