Editing Deicing (section)

=== Trains and rail switches ===
[[File:Icy train brake.jpg|thumb|300px|Ice build up in train brakes jeopardizes effective braking.]]
Trains and [[rail switch]]es in Arctic regions can have significant problems with snow and ice build up. They need a constant heat source on cold days to ensure functionality. On trains it is primarily the [[brakes]], [[suspension (vehicle)|suspension]], and [[Railway coupler|coupler]]s that require heaters for de-icing. On the rails it is primarily track switches that are sensitive to ice. High-powered electrical heaters prevent ice formation and rapidly melt any ice that forms.

The heaters are preferably made of PTC material, for example [[PTC rubber]], to avoid overheating and potentially destroying the heaters. These heaters are self-limiting and require no regulating electronics; they cannot overheat and require no overheat protection.<ref>{{cite report |title=2012 Autumn & Winter season |date=September 2012 |series=Drivers' briefing |place=London, UK |publisher=First Capital Connect }}</ref>