Which practice helps maintain visibility while operating an emergency vehicle in bad weather?

Using turn signals and hazard lights effectively is essential for maintaining visibility while operating an emergency vehicle in bad weather. These lights serve as important visual cues to other road users, which is crucial when visibility is compromised due to conditions such as rain, fog, or snow. By actively signaling their intentions, emergency vehicle operators can alert surrounding vehicles and pedestrians of their presence, thus reducing the risk of accidents.

In contrast, driving without headlights would severely impair visibility, making it more difficult for other drivers to see the emergency vehicle and for the operator to navigate through poor weather conditions. Driving at a high speed to clear the area quickly may seem efficient but can create dangerous situations where the operator cannot react in time to obstacles or other vehicles, especially in adverse weather. Reducing speed is indeed a wise choice in bad weather; however, relying solely on fog lights without using other lights, such as hazard lights or standard headlights, may not provide adequate visibility to others on the road.