Heavy traffic this morning, unseasonably warm, just around freezing. Second day in a row riding the snow tires, but little ice except on limestone portion of bike path. Quite a work out last night coming home on path, and yesterdays tracks frozen in the limestone this morning. Two flocks of geese heading North. Don't know much about groundhogs, but the geese are squaking spring has spring.

My guess is that the knobby tires take about 30% more energy to roll. I'll have to measure it some day.

Had one interesting moment. It was very damp, and I had no stops for first ten miles. Finally at a light I find I had no brakes, and was getting close to entering the busy intersection. Hate it when that happens. Brakes caught as I was crossing the crosswalk.