What must drivers do during heavy rain or low visibility conditions?

During heavy rain or low visibility conditions, it is crucial for drivers to reduce their speed and use their headlights. Lowering speed allows drivers more time to react to obstacles, changes in road conditions, or other vehicles that they may not see clearly due to rain. It also helps prevent hydroplaning, which can occur at higher speeds on wet surfaces.

Using headlights is equally important, as it improves the visibility of the vehicle to others and enhances the driver's ability to see the road ahead. In poor visibility situations, such as heavy rain, standard headlights should be used instead of high beams, as high beams can cause glare and make it harder to see. Keeping windows closed is advisable to maintain visibility and avoid distractions. Therefore, the combination of reducing speed and using headlights provides a safer driving approach in adverse weather conditions.