Cruiser tires
I actually ride cruiser tires. In southern CT the roads are pretty clear, and the sand/salt they spread all over the roads is a much bigger traction problem than the threat of black ice. The cruiser tires seem to love the sand, and they provide an awesome amount of rolling resistance for off season power training.
I've only seen black ice out here once in two seasons of daily riding, and it was late in the winter when you get temps well above freezing during the day causing snowmelt to run onto the roads, and then sub-freezing at night which makes it freeze.
I don't ride when there's actual snow falling from the sky and accumulating on the road, but that's less a matter of my bike's traction than it is concern about cars sliding around.
GB