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| Re: CBTC failure -- Is this the future? (1602377) | |||
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Re: CBTC failure -- Is this the future? |
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Posted by Stephen Bauman on Wed May 18 23:37:14 2022, in response to CBTC failure -- Is this the future?, posted by gbs on Wed May 18 22:30:21 2022. CBTC's failure mode is to rely on its Auxiliary Wayside System (AWS). This is a standard block system that's used for both interlockings and track breaks. Its capacity depends on how it was designed. The MTA's AWS can handle 3 tph. It's used when non-CBTC equipment is detected, such as work equipment is used at night.The MTA went cheap on its CBTC implementation. They could have used an AWS that could handle higher service levels. That would have increased CBTC's initial and maintenance costs. Also, track workers are supposed to carry beacons that would alert the CBTC of people on the track. The MTA chose not to purchase these. Work crews must call command and command will then place track sections on slow. |
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