C-ITS stands for Cooperative Intelligent Transport Systems, which enable ITS-stations to interact and cooperate by exchanging secured and trusted messages. There are two channels for exchanging these messages: long-range utilizing commercial cellular networks and short-range using direct communication. In Europe, ITS-G5 technology has been most used short-range technology, but recently 3GPP's C-V2X has emerged as a potential alternative. The objectives of this study were divided into three sections. 1) Deploy and demonstrate EU-wide EU CCMS system, 2) Test and demonstrate the operation of C-V2X (LTE-V2X) technologies defined by 3GPP, and 3) Investigate the applicability and compatibility of C-Roads platform specifications together with C-V2X technologies. To achieve these objectives, C-Roads platform specified C-ITS service was implemented at a traffic-light controlled intersection. The test intersection was equipped with an LTE-V2X capable Road Side Unit (RSU) that could directly communicate with a vehicle equipped with an LTE-V2X On Board Unit (OBU). C-ITS messages from the Traffic Light Controller were simultaneously transmitted to both the RSU and the Tampere C-ITS Node (TLEX platform). From the Tampere C-ITS Node, messages were distributed to a mobile application through Nodeon Finland’s C-ITS service provider back-end system. The communication between RSU and OBU was secured using ETSI certificates issued by a Root Certificate Authority included in the EU CCMS. Tests were conducted to study and evaluate the performance of short-range communication together with long-range communication. These tests examined factors such as security and overall latency.