Comparison of Interoperable CBTC System Standards in Urban Rail Transit Between Chongqing and New York

The interoperation of urban rail transit is an important development trend of rail transit control system. The interoperation CBTC system and protocol of Chongqing and New York are compared and analyzed from the three aspects of the overall system, communication protocol, and system verification and testing. Comparison results show that both interoperation functions are fulfilled by means of defining the standard interfaces between CBTC systems. However, Chongqing interoperation CBTC system is based on green lines and standards giving detailed guideline for system design and engineering applications, to facilitate and promote the future of other domestic urban rail transit projects, while the New York interoperation CBTC system is transformed based on brown lines, which needs to be compatible with the old AWS system and is limited to the New York metro.