Winter commutes mean waiting on cold platforms, walking in the wind and then stepping into a hot carriage. Dressing smartly for the whole journey makes it far more pleasant.
Wear layers you can adjust. A base layer and a thin mid layer under your jacket let you remove a piece when you board without losing warmth outside.
Choose a jacket with a hood or high collar, secure pockets and a hem long enough to cover your lower back when you sit. Gloves that work with a touchscreen save you from taking them off to check the timetable.
Footwear counts too. Warm, dry feet keep the rest of you comfortable, so choose waterproof shoes or boots with good grip for icy pavements.