Currently, it’s possible to warn rescue crews even without registration, for your car or any other vehicle involved in breakdown or accident.
 
User interface has been improved and you can also get your e-summary for all interventions. Moreover, precise localization is given by a new location map.
 
This application is developed by APRR.

It is available for free on iPhone, Androïd  and Windows phone : http://www.aprr.fr/fr/services-mobiles/sos-autoroute