oh god Juniper, the ice spots kill you. I haven't fallen on my bike like even a minor crash in about 2 years. The other day I took my bike out for a winter spin. In 30 seconds, I had already fallen right on the driveway. On ice, you can't turn if you don't have studded tires. I than proceeded to fall twice more during a 20 minute ride. If there's any ice at all, and you want to seriously ride, studded tires are almost a must.
Unless you like falling.