The large number of road accidents requires the development of a European approach for collecting data that will allow a harmonized and detailed investigation of accidents, while assuring the quality of the collected information. Within the project DaCoTA, it was examined and revised a large number of methodologies that exist already, in order elements of them to form the content of a broader framework. The new database was based on existing systems, after an assessment of protocol adequacy. The database includes eight sections of data, such as “Road”, “Vehicle”, “Medical Information – Injury Mechanism”. The collection methodology and the database were tested by at least 20 EU Member States before the final release for future use.