SLIPPING AND SLIDING
by Gunther Doerfert, Auto Safety Columnist
SLIPPING AND SLIDING
TIFFIN, OH: The air temperature was exactly 32 degrees F. Irene approached a small bridge on State 18 near Heidelberg College. Ahead, June, age 72, in another auto had spun out of control, had hit the side rails and gone through them, partly. Another foot or so and the vehicle would have dropped into the deep, cold water. Fortunately the elderly June was not injured, but the car was a real wreck. This raises the question, "why was the bridge so slippery?"
At 32 degrees (zero C.) the somewhat warm tires of previous vehicles had partially melted the icy surface. This thin and slick layer of water was just enough to send June's auto spinning. On the roadway before the bridge the warm tires had melted the ice also, but down to the pavement. The wind blowing under the bridge kept the bridge surface colder than the road so some ice remained there (sometimes this cold air refreezes the water).
In freezing temperatures be careful of bridges, especially when the road itself appears to be safe. This is particularly true in southern areas where ice storms are more prevalent than dry snow. Older drivers should make allowance also for slower reaction and decision making time in a highway crisis such as this black ice incident.
GHD161 all rights reserved

