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by notmtaemployee
3236 days ago
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When NYCT overlay's CBTC signalling on a line the block wayside system is upgraded at the same time and the two systems work in tandem. This allows non-CBTC equipped trains to operate over CBTC controlled territory and the wayside system functions as a backup should CBTC fail for any reason. As you point the integration work for this is complex and is usually the primary driver of delays and cost increases. |
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