  Cooperative Intelligent Transport Systems (C-ITS) create, share and process
massive amounts of data which needs to be real-time managed to enable new
cooperative and autonomous driving applications. Vehicle-to-Everything (V2X)
communications facilitate information exchange among vehicles and
infrastructures using various protocols. By providing computer power, data
storage, and low latency capabilities, Multi-access Edge Computing (MEC) has
become a key enabling technology in the transport industry. The Local Dynamic
Map (LDM) concept has consequently been extended to its utilisation in MECs,
into an efficient, collaborative, and centralised Edge Dynamic Map (EDM) for
C-ITS applications. This research presents an EDM architecture for V2X
communications and implements a real-time proof-of-concept using a Time-Series
Database (TSDB) engine to store vehicular message information. The performance
evaluation includes data insertion and querying, assessing the system's
capacity and scale for low-latency Cooperative Awareness Message (CAM)
applications. Traffic simulations using SUMO have been employed to generate
virtual routes for thousands of vehicles, demonstrating the transmission of
virtual CAM messages to the EDM.
