  Work on Local Dynamic Maps (LDM) implementation is still in its early stages,
as the LDM standards only define how information shall be structured in
databases, while the mechanism to fuse or link information across different
layers is left undefined. A working LDM component, as a real-time database
inside the vehicle is an attractive solution to multi-ADAS systems, which may
feed a real-time LDM database that serves as a central point of information
inside the vehicle, exposing fused and structured information to other
components (e.g., decision-making systems). In this paper we describe our
approach implementing a real-time LDM component using the RTMaps middleware, as
a database deployed in a vehicle, but also at road-side units (RSU), making use
of the three pillars that guide a successful fusion strategy: utilisation of
standards (with conversions between domains), middlewares to unify multiple
ADAS sources, and linkage of data via semantic concepts.
