[PRR-talk] Marker/Classification Lights

Steve Hoxie stevehprr at cox.net
Tue Jan 1 23:02:31 EST 2008


MessageSid--Thanks.  I understand.

Steve Hoxie
Pensacola FL
  ----- Original Message ----- 
  From: Sid Johnson 
  To: 'abbuchan' ; 'Richard Roth' ; arrjerry at aol.com ; prr-talk at dsop.com 
  Sent: Tuesday, January 01, 2008 8:37 PM
  Subject: Re: [PRR-talk] Marker/Classification Lights


  Al is absolutely correct.  Steve Hoxie, just for clarification, the class of a schedule is only defined by the timetable on the schedules pages, (as in 1st Class, 2nd Class, 3rd Class, etc) not the classification lights.  Those lights indicate if a train is to be operated as a section of a scheduled train or as an extra.  The PRR certainly did the right thing in 1939 when its signal system and MBS negated the need for Timetable/Train Order operation.

  I worked under both systems and the TT/TO system was an anachronism or unbelievably complex!  In 1977 we took a lesson from the PRR and adopted MBS for our "dark territory".  Of course by then we had total radio coverage and didn't need block operators.

  Sid Johnson


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  From: prr-talk-bounces at dsop.com [mailto:prr-talk-bounces at dsop.com] On Behalf Of abbuchan
  Sent: Tuesday, January 01, 2008 6:39 PM
  To: 'Richard Roth'; arrjerry at aol.com; prr-talk at dsop.com
  Subject: Re: [PRR-talk] Marker/Classification Lights

   

  Re: The red, green, and white classification light colors, therefore would be:White - for an extra; Green - section of train following; Red - Loco is rear of train and running in reverse

   

  I hope some year once and for all we can all stop screwing up the nomenclature. 

   

  Class light lamp colors were only green and white. Separate lamps known as marker lights were initially red and green, subsequently red and yellow and finally just red.

   

  Al

   



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