I'm really intrigued to know what the issue is with the tram... I live in Vilnius where the coldest it's been since I've moved here is -20c and our trolley bus

I'm really intrigued to know what the issue is with the tram... I live in Vilnius where the coldest it's been since I've moved here is -20c and our trolley bus network has no issues operating in that. I was thinking maybe it's because you are on the coast, so the salty air causes issues, but so are the most populated cities in Norway. Maybe it's like the UK where they figured they could save money by having less extreme hardy equipment, and so whenever it drops below freezing the entire country grinds to a halt.