Which action is recommended when driving in snow or ice?

Maintaining a greater distance from the vehicle ahead is crucial when driving in snow or ice because it allows for increased reaction time in case of sudden stops or slides. Slippery conditions can lead to longer stopping distances, so having ample space helps prevent collisions by ensuring you can stop safely if the vehicle in front of you brakes suddenly. Additionally, this greater distance can accommodate for any unpredictable movements of either your vehicle or the vehicle ahead due to the reduced traction.

The other options are not suitable due to the risky nature of driving in winter conditions. Increasing your speed could lead to loss of control, using cruise control can be hazardous since it may not react appropriately to slippery surfaces, and driving in a lower gear at all times may not always be practical, as it could lead to other driving challenges.