IEEE 1474.3-2008 PDF
This recommended practice establishes a preferred system design and functional allocation for CBTC systems.
The purpose of this recommended practice is to define a preferred CBTC system design/system architecture to achieve the CBTC performance and functional requirements of IEEE Std 1474.1TM-2004,1 and to allocate functions to the major CBTC subsystems.
New IEEE Standard – Inactive-Reserved. This recommended practice establishes a preferred system design and functional allocation for CBTC systems.