Emergency Medical Services (EMS) constitute a unique component of health care at the interface between primary and hospital care. EMS data within the pre-hospital setting represents an unparalleled source of epidemiological and health care information that have so far been neglected for public health monitoring. The European Emergency Data Project (EED Project) thus intends to identify common indicators for European EMS systems and to evaluate their suitability for integration into a comprehensive public health monitoring strategy. The article provides a brief overview on objectives and methodology in the form of a progress report.