With the inclusion of the first cars in traffic, there was a need to save human lives, people involved in traffic accidents. The response time of emergency services in the shortest possible time proved to be crucial. This paper analyses the principles of operation of the eCall system, its architecture, efficiency, and the possibilities of expanding the system by collecting a large amount of data on a traffic accident. The eCall system is a revolutionary solution that allows emergency services to be notified of an accident in real time. Three basic subsystems are important for the functioning of this system: a vehicle with built-in equipment for data collection and a with communication interface, a telecommunications structure with an emphasis on mobile networks, and a call centre 112 that receives eCalls. The European Commission supports the introduction of eCall at the level of the whole of Europe and beyond, encourages the regulation of the system by recommendations, directives and encourages the development of standards related to it. Many parties are involved and interested in this project, because the final target is saving human lives and reducing the costs that arise directly or indirectly after a traffic accident. The eCall has proven to be useful, thousands of lives are saved on an annual basis. The efficiency of the eCall system has proven to be so good that investments in expanding its functionality continue. The main pillar in this is the development of new technologies, which enable the collection of new data and the transmission of it to the 112 centre in real time, in a very short time interval.