I've written a couple of reasonably well-received guides about running in a New England winter. As you've clearly learned, such activity is its own specialized thing, requiring its own habits and preparations even beyond running the rest of the year. My guides focus mainly on situational awareness (e.g. always knowing your escape route around piles of snow if a car comes along) and gear. You've identified a couple of gaps (e.g. the winter-specific dangers of running in the early morning) and reminded me that those guides are generally due for an update. Thank you.