948 ITU‐T's Technical Reports and Specifications 5.4.3.3 Relationships ISO/TC 205/WG3 (Building environment design/Building Automation and Control System (BACS) Design). ISO/TC (59 Buildings and civil engineering works). 5.4.4 Building information modelling (BIM) 5.4.4.1 Task The standardization of the following areas should be implemented in the building information modelling of SSC: synergy of building information modelling with related ICT systems in SSC. The tasks include, but are not limited to: developing Recommendations regarding the interface of building information modelling with related ICT systems in SSC including GIS, navigation, wireless telecommunication, etc. developing guidelines and best practices for the ICT use for building information modelling in SSC. 5.4.4.2 Gap Standards related to BIM in SSC are still required in the following areas: application of the building information modelling in SSC. hierarchical application for CityGML and IndoorGML3 in SSC [OGC Report]. combination of BIM with IoT, GIS, and wireless telecommunication in SSC. 5.4.4.3 Relationships ISO/TC 59 (Buildings and civil engineering works). OGC (Open Geospatial Consortium). 5.4.5 Traffic systems 5.4.5.1 Task The tasks include, but are not limited to: developing guidelines for building intelligent transport system in SSC. developing Recommendations and best practices related to the implementation of intelligent transport system with a view to addressing environmental challenges. providing the necessary collaboration for joint activities in this field between ITU‐T and SDOs conducting related work on ITS. 5.4.5.2 Gap Standards related to city traffic systems are still required in the following areas: application of the road traffic facilities in SSC. issues related to standards for communications required for ITS applications. 3 See OGC report, OGC Smart Cities Spatial Information Framework.