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    IEEE Recommended Practice for Communications-Based Train Control (CBTC) System Design and Functional Allocations

    IEEE-1474.3ActiveOfficial catalogue

    Issuing body: IEEE Standards Association (IEEE SA) · Version: IEEE 1474.3-2025 · Published: 2025-06-13

    Link verified July 22, 2026

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    Scope

    Recommends a preferred CBTC system design and functional allocation for meeting the performance requirements of IEEE 1474.1, decomposing automatic train protection, operation and supervision functions to the level where each subfunction can be assigned to a specific CBTC subsystem.

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