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Re: Canarsie CBTC

Posted by Stephen Bauman on Thu Jun 9 22:07:43 2005, in response to Re: Canarsie CBTC, posted by tracksionmotor on Thu Jun 9 20:29:15 2005.

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I'm not following you.

ATO/ATC/ATS requires an inductive loop installation.

ATO/ATC/ATS requires some form of communications to the moving train at all times and places. This has taken the form of coded track circuits, inductive loop, leaky transmission lines and direct RF. The pardigm can be either CBTC or a conventional block system.

RealRoad covers long distances and does not require extensive comm
points...just a few milemarkers, stations, interlocking and switch points. NYCTA subways will be on the order of say every 200 feet.

You cannot have dead spots in a CBTC system. For direct RF, you need to place as many access points as are required for reliable communications. This is based on RF propagation not whether it's a class I RR or the NYCT.

System will detect and comm trainsets

but not trainsets with faulty RF equipment.

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