Re: NWP -- Island Mtn. tunnel signal system
Author: ex-BN
Date: 03-19-2017 - 08:50

Does the signal protect tunnel failure, block occupancy or both? If it was strictly for tunnel condition one would expect the signal to indicate "clear" even after the train had passed it. In my way of thinking it would make sense to include block occupancy since flagging in tunnels is less than ideal.

Also were there distant approach signals to the tunnel. If so were they active or passive?



Subject Written By Date/Time (PST)
  NWP -- Island Mtn. tunnel signal system sp overnight 03-16-2017 - 21:39
  Re: NWP -- Island Mtn. tunnel signal system OPRRMS 03-16-2017 - 22:24
  Re: NWP -- Island Mtn. tunnel signal system Nudge 03-17-2017 - 10:16
  Re: NWP -- Island Mtn. tunnel signal system RS32 03-18-2017 - 10:39
  Re: NWP -- Island Mtn. tunnel signal system Negin 03-18-2017 - 12:59
  Re: NWP -- Island Mtn. tunnel signal system ron 03-19-2017 - 08:20
  Re: NWP -- Island Mtn. tunnel signal system ex-BN 03-19-2017 - 08:50
  Re: NWP -- Island Mtn. tunnel signal system Nudge 03-19-2017 - 11:13
  Re: NWP -- Island Mtn. tunnel signal system Lucky Strike 03-19-2017 - 12:49
  Re: NWP -- Island Mtn. tunnel signal system OTN 03-19-2017 - 18:49
  Re: NWP -- Island Mtn. tunnel signal system Kyle 03-20-2017 - 07:31
  Re: NWP -- Island Mtn. tunnel signal system OTN 03-20-2017 - 20:39
  Thanks OTN Kyle 03-21-2017 - 11:55
  Re: NWP -- Island Mtn. tunnel signal system Espee2472 03-21-2017 - 12:17
  Re: NWP -- Island Mtn. tunnel signal system SP overnight 03-20-2017 - 08:28


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