Alerte 3117 is a free Android app developed by SNCF, designed to assist individuals in reporting dangerous situations within the French railway system. Available 24/7, the app provides a direct line of communication to SNCF operators who are trained to handle various emergency scenarios, including attack alerts.

One of the key features of Alerte 3117 is the option to accept geolocation. By enabling this feature, operators and emergency services can quickly and efficiently intervene in critical situations. Additionally, users have the choice to send text messages to 3117 instead of making a phone call, allowing for discreet reporting without endangering oneself.

It is important to note that the caller's phone number will be stored for communication purposes, and conversations are recorded in accordance with emergency call usage. Misuse of this emergency number may result in legal consequences. For any further questions or queries, users can contact the developers at