IEEE P1474.3/D12.0, Mar 2008
Based Train Control (CBTC) System Design and Functional Allocations
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About This Item
P1474.3/D12.0, Mar 2008 is a transportation standard draft focused on Communications-Based Train Control (CBTC) system design and functional allocations. It helps define how CBTC functions are divided across onboard and wayside elements, supporting clearer engineering decisions and more consistent system integration. As an inactive technical document, it is still useful for understanding the design intent, terminology, and allocation approach associated with P1474.3/D12.0, Mar 2008 in rail control projects and related specifications.
What is P1474.3/D12.0, Mar 2008?
This standard draft addresses the structure and functional breakdown of a CBTC system, with emphasis on design responsibilities and how control functions are assigned within the overall architecture. P1474.3/D12.0, Mar 2008 is relevant to technical teams working on train control concepts where communication links, train supervision, and operational functions must be defined with care. It typically supports system-level planning, interface understanding, and requirements development for rail transit control environments.
Where is P1474.3/D12.0, Mar 2008 used?
P1474.3/D12.0, Mar 2008 is most applicable in rail transit and automated train control projects that use CBTC architecture. It may be used by engineers, integrators, and procurement teams preparing system specifications for onboard equipment, wayside controllers, communication networks, and train supervision functions. The document can also support design reviews and technical comparisons when evaluating how control and safety-related functions are distributed across a transit signaling system.
Why is P1474.3/D12.0, Mar 2008 important?
Clear functional allocation is important in CBTC because it affects safety, interoperability, and operational consistency. P1474.3/D12.0, Mar 2008 can help reduce ambiguity when defining responsibilities between train, trackside, and communication subsystems. That makes it useful for compliance work, engineering coordination, and test planning. For transportation projects, a well-defined design basis can also reduce integration risk and improve confidence in system behavior during specification and verification activities.
- CBTC design and architecture
- Functional allocation between subsystems
- Rail transit control integration
- Technical specification and verification support
- Inactive draft reference for design context
- Publication Date: 2008
- Standard Status: Inactive
- Publisher: IEEE
- Subject: Transportation
- Official IEEE: Doi link
- New Version Available: P1474.3 (2025)
- Previous Version: P1474.3 (2024)
- This Version: P1474.3 (2008)
- Previous Version: P1474.3 (2008)
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