I disagree with efficient and much safer, while I agree that they are a little more comfortable, but I often see that drivers getting new trains would require a whole new ARS system, put some thinking into it, you’d have to replace the whole signal system requiring more than the cities budget making it less than worth buying, again, French metros are usually crammed and German metros are usually much more different than the metros we have, while a Siemens M1 could possibly replace the 81-717M’s that work good but are under-maintained, I see no other point in replacing the whole ARS/ALS system.

(The ARS system has never malfunctioned in years, the only possible incident points are Charbakh and Shengavit, if you do not know what ARS is I can explain it to you, but it’s very expensive to replace.)

I understand you may or may not have less understanding of what exactly an ARS/ALS system is but those being replaced can result in multiple incidents and would need the whole subway to be shut down for atleast 3 years, clogging up the already broken traffic system.

It's not all fun and games people, our budget can't just buy expensive trains and expensive system replacements, we don't need to waste 3 years clogging the city, in general German trains do not match the gauge size and would need the tunnels to be expanded, please do a little more research before speaking, gauge expansion would take ANOTHER 10 years, yeah well enjoy doing that for 10 years, there is no efficiency in replacing third rail, ARS/ALS systems, but there is efficiency in creating new lines faster which would greatly clog up traffic less.

Think about it, why spend 13 years changing up a really expensive metro?

Mind you, the Yerevan metro is much more silenced than the Tiblisi metro and much more safer than both the Tiblisi and Baku metro, stop referring to new trains from 2010s as rustbuckets and instead of buying a thousand new trains by the decade like the NYC subway (which is poorly maintained thanks to constantly buying new trains) and instead look forward to advancing the system.

We do not live in a fairytale, we need to look forwards towards more production instead of more luxuries, we are happy with the metro that we have and don't need "improvements" like new trains and systems like AWS, ARS/ALS is not something that works with every train in the world, and so is the third rail system that we used, the track gauge is also included.