[skissane]

> This appears to be quite an old document (2012 judging by some of the dates in the screenshots, and the network map) but fascinating nonetheless, thanks for posting!

Yeah, is this factoid - central Melbourne train signals being controlled by an emulated PDP-11 - still true in 2021? I don’t know. Definitely this is known to have been true some years ago but can anyone confirm if it remains true today? The construction of the Melbourne Metro requires new signals, which I assume would be controlled by a brand new control system not the old PDP-11-based system. But if you are going to introduce a new system for one line, wouldn’t it make sense to try to migrate the existing lines to it as well?

[sytringy05]

According to this web page - https://vicsig.net/infrastructure/signalbox/Metrol - it seems yes, it has been replaced.

> Train Describer replaced with TCMS in 2014-2016.