During heavy rain, what should drivers do to enhance visibility?

Turning on the headlights during heavy rain is essential for enhancing visibility for several reasons. Headlights illuminate the road directly in front of the vehicle, making it easier for the driver to see obstacles, road signs, and other vehicles. Additionally, when headlights are turned on, other drivers can see your vehicle more clearly, which is crucial in low visibility conditions such as heavy rain. This helps prevent accidents by allowing other motorists to gauge the position and movement of your vehicle.

Using hazard lights is generally not recommended while driving, as they can confuse other drivers about your intentions. Not signaling while slowing down can also pose a hazard, as it may not communicate your actions to those behind you. Relying solely on windshield wipers may improve visibility through the windshield, but without proper lighting from the headlights, the overall safety and visibility on the road are compromised. Thus, activating headlights is the most effective measure to ensure both your visibility and that of others while driving in heavy rain.