Just before noon Monday, police were called to the scene of another accident, this one downtown.
Even walking, firefighters found the conditions dangerous.
"It was deceiving," Yeager said. "The streets may not have looked slick this morning, but they were slick."
Sun was beating on the ice, causing places on the road to thaw, but the "super cold temperatures" were instantly refreezing the ice into a slick, smooth surface. But because it didn't look slick, cars didn't seem to be slowing down, Yeager said.
"It was more than meets the eye," he said.
— News reporter Mark Newman is on Twitter @couriermark