Interoperability CBTC System

Product Introduction

Interoperability-CBTC (I-CBTC) is a CBTC system that realizes the interconnectivity of different signal equipment based on unified regulations and standards and the interoperability of trains. The main characteristic of interconnectivity is to meet the interoperability requirement of train and improve the utilization ratio and operation capability of equipment. TCT integrates different signal systems based on the interconnectivity solution of self-developed CBTC so that trains with various onboard equipment can realize seamless, safe, and reliable operation on one or more rail transit lines with different trackside equipment.


I-CBTC is a further upgrade based on CBTC and can reduce the user’s investment and operation cost, improve passengers’ traffic efficiency, and realize resource sharing. With the development of rail transit “from nothing to less” and “from less to more”, many cities in China gradually form a rail transit network structure or basic network. However, the signal systems of different lines are incompatible, which results in cross operation failure, low equipment universality and resource sharing rate, high training and maintenance difficulty and cost, unbalanced passenger flow distribution and large transfer pressure. While I-CBTC can reduce the resource waste of lines, realize resource sharing through overall planning of railway network and has the following advantages:
1. Realize resource sharing of different lines and vehicles, deploy vehicles of other lines according to the passenger flow, improve the utilization ratio, reduce the demand of vehicles from the original single line to the whole railway network and effectively minimize the vehicle purchasing cost;
2. Realize operation dispatching and resource sharing of drivers and crew. Unified operation interface and mode is favorable for overall integration and deployment of personnel and reducing human resource and training costs.
3. Realize sharing of train depot, parking lot, main lines and transfer stations, and reduce the land construction and acquisition for equipment and rails as well as the construction and later maintenance cost.
4. Favorable for realizing network operation of urban rail transit and improving the passenger travel efficiency.

In 2015, Chongqing Rail Transit Loop Line was approved formally as the national rail transit interconnectivity demonstration project. TCT and other three domestic signal system manufacturers completed the establishment of interconnectivity standard jointly as the signal system general contractor of Chongqing Rail Transit Loop Line and the technology leader of demonstration project, and successfully realized the engineering application of CBTC.  
The interconnectivity demonstration project of Chongqing Rail Transit also promoted the formation of interconnectivity standard of international urban rail transit signal system. IEEE has started the preparation of signal system interconnectivity standards since 2010 and it has not been released yet till now. Inno Trans Exhibition was held in Berlin, Germany in September 2018. Operation Management Special.  Committee of China Association of Metros and the National Engineering Laboratory of Urban Rail Transit Train Communication and Operation Control jointly released the white paper of Guidance for Interconnectivity Construction of Rail Transit CBTC Signal System (Chinese and English versions) which is the first international industry technical specification of urban rail transit CBTC signal system interconnectivity.  
Furthermore, the implementation of interconnectivity demonstration project of Chongqing Rail Transit breaks through the world-class problem of urban rain transit interconnectivity. TCT has realized the project application of I-CBTC as the leading party and made great contribution to the application of urban rail transit interconnectivity technology.