Which action is not recommended when driving in adverse weather?

Using cruise control in adverse weather conditions is not recommended because it can lead to a loss of control over the vehicle. When driving in conditions such as rain, snow, ice, or fog, road traction can be significantly reduced. Engaging cruise control may prevent the driver from making necessary adjustments to speed or braking quickly in response to changing conditions, such as a sudden loss of traction or encountering a slick spot on the road.

In contrast, reducing speed to match road conditions, maintaining a safe distance from the vehicle ahead, and being vigilant for sudden changes in road conditions are all crucial actions for ensuring safety while driving. These measures allow the driver to respond more effectively to hazards and maintain better control of the vehicle in challenging environments.