by train2
Within the US on the heavy rail system (ie. US Class 1's regionals, etc.) the use of armstrong (rods and pipelines) interlocking towers are about to be a thing of the past. Sometime during the last 10-15 years when I was riding transit systems such as MTA and Chicago's CTA I have vague memories of some armstrong interlockings. I did not take photos and notes so I can't remember locations or even the exact transit system.
So I am going to post this message here and other boards that deal with CTA (as CTA is likely the other tranist system I am thinking of) to see if any armstrong interlockings still exist? If they do not how recently did they exist? And if some are still in place how in danger are they of being replaced?
If you are aware of any other transit systems that have these interlockings please offer that info as well.
So I am going to post this message here and other boards that deal with CTA (as CTA is likely the other tranist system I am thinking of) to see if any armstrong interlockings still exist? If they do not how recently did they exist? And if some are still in place how in danger are they of being replaced?
If you are aware of any other transit systems that have these interlockings please offer that info as well.