hi Steph!!!!! So obviously friction generates heat and trains going over tracks will generate friction and heat right? so tracks will warm up like a freeway does with traffic etc etc. Do mag trains that don't 'touch' their tracks also generate heat thru the magnets? Is icing on tracks (conventional or mag) a problem?
Wanted to add on my ask - we had track warping from our extreme heat cause a train derail here so I wanted to know if extreme cold could do that too
From what I'm aware, they do have to test the heat load for the superconducting magnets, so this could in theory be an issue - it's definitely something that has to be factored in!
Ice is a big problem for conventional steel-wheeled trains. You may have seen the videos of Metra (Chicago-area public transit) lighting small fires to keep ice from forming on their rails when it gets too cold up there. This is actually quite common (it even made it into an episode of Chuggington) and helps keep the switches thawed, too, which is...incredibly important, to say the least.
Tracks are made of steel, and like to expand from heat and contract from cold, so keeping them at the right width and size is crucial to keep trains moving. Extreme temperatures are definitely a problem here.
I'm not as sure about maglevs because there aren't as many in operation currently, but I'm sure as they become more common we're going to start hearing about issues they uniquely face.














