Working Group #2   Communications-Based Train Control (CBTC)

Scope:  This working group is currently working on updating IEEE 1474.1, 1474.2, 1474.3 and 1474.4.

IEEE 1474.1 – This standard establishes performance and functional requirements necessary for enhancing performance, availability, operations, and train protection for a communications-based train control (CBTC) System.

IEEE 1474.2 – This standard provides for consistent user interfaces that take advantage of the characteristics of communications-based train control (CBTC) systems to enhance service effectiveness of a rail transit system.

IEEE 1474.3 – This recommended practice establishes a preferred system design and functional allocation for a communications-based train control (CBTC )systems.

IEEE 1474.4 –  This recommended practice provides a preferred approach for functional testing of a communications-based train control (CBTC) system, based on the CBTC system design and functional allocations as defined in IEEE Std 1474.3

Purpose: The IEEE 1474 standards and recommended practices are at the core for communications-based train control (CBTC) systems and the current updates will ensure the standard are up to date and reflects the changes in technology and implementations world wide. These standard and recommended practices will continue to improve performance, availability, operations, and train protection, and aid in facilitation of new CBTC implementations.

Stakeholders: Stakeholders for the Standard: Transit Agencies, Consultants, Academia, CBTC System and Equipment Suppliers.

WG Officers

Yousef Kimiagar,


Staff Program Manager
Soo Kim,