[ Whitepaper ]

SI Interface


Facilitating large-scale deployment of C-ITS use cases requires communication between road users and roadside equipment independent of the equipment manufacturer.


A standard interface for the exchange of C-ITS messages such as SPAT, MAP, CAM, SRM, and SSM between Traffic Light Controllers (TLCs) and the national intelligent TLC datahub was missing.


The SI interface enables Traffic Light Controllers (TLCs), and other roadside equipment, to communicate with road users in a standardized way

Whitepaper SI-interface