One of the fruits of the Dutch Talking Traffic program is the realisation of a standard for exchanging C-ITS messages with Traffic Light Controllers (TLCs). The standard was developed in a workgroup including the leading European Union TLC vendors Dynniq, Swarco, and Yunex and has been implemented on a large scale in The Netherlands. This standard has been created to facilitate the large-scale rollout of TLC use cases based on long-range communication. It is now also adopted by the region of Flanders (Belgium) in their large-scale C-ITS deployment initiative Mobilidata as well as studied in the NordicWay 3 program. In the meantime, the Netherlands is looking at expanding the scope of the interface to other types of road equipment, such as RoadSide Units (RSUs), electronic signs, access barriers, sensors, etc. This standard facilitates the large-scale deployment of many day 1 and day 1.5 C-ITS use cases, such as Green Light Optimal Speed Advisory (GLOSA), Time to Green(TTG), and Traffic Signal Priority (TSP).