What must drivers do when entering a designated low visibility zone?

When entering a designated low visibility zone, drivers must reduce speed and increase caution to ensure safety. This is because low visibility conditions, such as fog, rain, or snow, can significantly impair a driver's ability to see obstacles, other vehicles, and signage. By slowing down, drivers give themselves more time to react to any hazards they may encounter.

Increasing caution is also essential in these situations as it encourages drivers to be more vigilant, allowing them to be prepared for sudden changes in the environment. Maintaining regular speed would not account for the reduced visibility and could increase the risk of accidents, while using high beams can actually worsen visibility in foggy conditions due to light scattering. Ignoring reduced visibility protocols can lead to dangerous situations, including collisions.

Thus, reducing speed and increasing caution is the appropriate practice for driving safely in low visibility zones.