3 ms·
The lines without AC were constructed (mostly) in the 19th century. It's not possible to fit AC. Alternative ways to cool the trains have been under investigat
by Symbiote 4y ago
The lines without AC were constructed (mostly) in the 19th century. It's not possible to fit AC.
Alternative ways to cool the trains have been under investigation for decades, but there isn't an obvious solution.
- treeman79 4y agoThey didn’t need AC in 19h century. The ground itself was cool and kept people comfortable. 200 years of constant usage has heated up the surrounding bedrock.