This is my first winter using a bike, correct me if I'm talking 'Betty' here, do salted roads which have had no rainfall to wash them have a slight 'glaze' on them, I kno some of the other slip hazards, like- White lines, man-hole covers, 'segment transition strips (the tar line that joins, well,,,joins), banana skins, KY, and laminate flooring pieces-yep thats laminate flooring pieces.
I've not had a slide but it doesnt too 'old age friendly.