What is a common cause of skidding on icy roads?

Excessive speed for conditions is a primary cause of skidding on icy roads because it reduces the driver's ability to maintain control of the vehicle. When driving too fast on ice, the tires cannot grip the surface effectively. The friction between the tires and the slick road is compromised, making it easy for the vehicle to slide or skid.

In icy conditions, maintaining a slower speed allows for better control and reaction time, enabling drivers to adjust to sudden changes in their environment, such as turns or stops. Drivers should always consider road conditions and adjust their speed accordingly to prevent losing traction and sliding on ice.

While under-inflated tires, worn brakes, and poor visibility are all factors that can contribute to unsafe driving conditions, they do not directly relate to the specific issue of losing traction due to high speeds in icy situations. Thus, the focus on speed as a critical factor in maintaining control on icy roads is essential for safe driving practices.