Most serious skids result from which of the following actions?

Driving too fast for the conditions is the leading cause of serious skids because it reduces the driver's ability to maintain control over the vehicle. When speed exceeds what is safe for the existing road conditions—such as wet, icy, or uneven surfaces—the tires can lose traction, leading to a skid. At higher speeds, even small steering adjustments or changes in vehicle weight can result in a loss of control, making it difficult for the driver to correct the skid or maneuver safely.

In adverse conditions, the physics of motion means that a higher speed significantly increases stopping distances and reduces the effectiveness of steering inputs. Drivers need to adapt their speed to match the conditions to mitigate risks and maintain control of the vehicle, especially in situations where road surfaces may be compromised.