The aim of this survey is to deliver the basis for a follow-up research project to determine the advantages for relevant stakeholders when different road-traffic and road-infrastructure databases are combined. For this purpose, a specific methodology should be developed where those different databases are automatically pooled, completed and updated in order to evolve a new, innovative and online-usable Intelligent Transport Systems (ITS)-service. Furthermore, use cases should be taken into account to show tangible benefits of such an integrated and accurate database.