If you are driving on packed snow, how much should you reduce your speed?

Answer: C — By one half

When driving on packed snow, it is advisable to reduce your speed by half. This significant reduction in speed helps to enhance your vehicle's control and stability on slippery surfaces, which is crucial for maintaining safety. Packed snow can create conditions where traction is compromised, and driving too fast increases the risk of losing control or skidding. The need for a halved speed recognizes that even a slight increase in speed can lead to reduced reaction times and longer stopping distances, both of which can be critical in winter driving conditions. By slowing down effectively, drivers give themselves more time to respond to unexpected obstacles or changes in road conditions, which is essential for safe navigation on snow-covered roads.