Research on the Method of Interoperability Test for the Onboard Equipment of CTCS-3 Train Control System of Chinese Railway

The CTCS-3 (Chinese Train Control System Level 3) technical standards system has been adopted for the train control system of railway lines with speed of 350km/h and above in China. In this paper, the requirements of the interoperability of CTCS-3 on-board equipment was firstly analyzed in depth, to definite the features of the interoperability test, secondly the testing methodology of the interoperability test of CTCS-3 were studied and compared, and the testing method suitable for independent third-party interoperability testing was discussed, in addition the structure and basic working principle of the test bench for interoperability testing of CTCS-3 on-board equipment was described. The research results of this paper can provide a guidance for how to carry out laboratory interoperability test and how to establish the third-party interoperability test laboratory.