On November 3, OGC and ASAM will host a full-day joint workshop in Munich, ahead of the ASAM International Conference 2026, bringing together experts from the communities developing complementary and interoperable road-space models. The workshop will feature ASAM OpenDRIVE, OGC CityGML Transportation, the OGC Transportation/Mobility Domain Working Group, and the emerging HDML initiative. The agenda includes morning live demonstrations, afternoon discussions on interface standards and interoperability, and a closing session dedicated to defining concrete next steps, responsibilities, and future collaboration.