smallspy
Senior Member
Rail breaks are not unusual at extremely cold temperatures. They are rarer with the third rail due to the profile and mass of the rail compared to the running rail, but they do happen from time-to-time.Dan.. correct me if I am wrong but did this not occur a few years back, I believe on Line 2 at St George?
If I recall, it led to a rather significant fire when things started to arc.
I don't recall the specific instance that you're referring to, but I find it hard to believe that there would be a third rail break at St. George due to cold in any circumstance. There may have been some other failure that led to the event, but it wouldn't have been temperature-based.
Dan