Final answer:
Use of cruise control during rain, sleet, or snow is not recommended because it can lead to loss of vehicle control by reducing manual adjustments to speed, necessary in slippery conditions.
Step-by-step explanation:
Drivers should not use cruise control during rain, sleet, or snow to maintain a steady speed. The use of cruise control in these conditions can be dangerous because it reduces the driver's control over the vehicle. When roads are slippery, maintaining traction is crucial, and the ability to manually adjust speed can aid in preventing skids or loss of control. During adverse weather conditions, a car's tires can lose contact with the road—a situation known as hydroplaning. In such cases, if cruise control is engaged, it could attempt to maintain speed by accelerating, potentially leading to a loss of control. The driver's ability to quickly reduce speed without the aid of friction between the tires and the road is necessary for safe driving. It is important for drivers to maintain full control over their vehicle's speed and to be able to make immediate adjustments based on road conditions. Therefore, cruise control should be avoided during wet or icy conditions.