A Transit Agency Guide to Evaluating Secondary Train Detection/Protection Systems in Communications-Based Train Control Systems (2018) / Chapter Skim
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SECTION 1 1 Introduction A continuous need to address passenger growth, enforce safe operation, and more effectively utilize rail transit infrastructure has led many urban mass transit operators to adopt new technologies. The evolution and adoption of Communications‐Based Train Control (CBTC) technology over the past decades have grown significantly, which in turn made it a widely accepted signaling system for both new mass transit projects and replacements/upgrades of legacy signaling systems. CBTC's capabilities provide an advanced means to safely control rail traffic while increasing throughput and shortening headways. However, the selection of CBTC technology and application strategies can pose some significant challenges, especially when modernizing existing transit lines with goals to achieve specific benefits and return on capital investment. This publication seeks to assist transit agencies considering a CBTC system with understanding the need for supplementing CBTC with a secondary train detection/Protection System (STD/PS)
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